Net-II Online Mock Test 2020 (Group: Computer Science)

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Quizzes Created: 2 | Total Attempts: 824
| Attempts: 292 | Questions: 200 | Updated: Mar 21, 2025
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1. is equal to

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About This Quiz
Net-II Online Mock Test 2020 (Group: Computer Science) - Quiz

Hey Member, Assalam O Alikum!You are about to take the "NET-II Online Mock Test 2020". We hope you are well prepared to attempt this mock test. Before starting this mock test, we want to get you aware of the paramount instructions. Please read the instructions carefully to avoid any... see moreissue.
1) This mock test has been designed for one attempt per IP address user only and the user has to restrict for three hours. 2) No further attempt request will be accepted by any student (unless a student faces any serious issue like infrequent power breakdown etc while attempting this mock test)
3) Be sure before starting this mock test that you have chosen the right Group according to Intermediate majors. Clearly mentioning here, this link contains Computer Science portion with the other majors.
4) Be sure before starting mock test that you have load shedding free hours in which you are supposed to attempt it.
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6) Central clock will remain displayed throughout the mock test time on top right corner of your screen (and system will see less

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2. How many term of the series :

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3. Which of the following is correct Spelling? 

Explanation

The correct spelling is "Vivacious." This word means lively, animated, or full of energy. It is spelled with two "v's" and an "i" after the first "v."

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4. Two lines  are 

Explanation

The correct answer is "Perpendicular to each other". Two lines that are perpendicular to each other intersect at a right angle, forming a 90-degree angle. This means that the lines are neither parallel nor intersecting, but rather they cross each other at a right angle.

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5. What is removed when a relation is converted from 2NF to 3NF?

Explanation

When a relation is converted from 2NF to 3NF, the transitive dependency is removed. Transitive dependency occurs when a non-key attribute depends on another non-key attribute, which is dependent on the primary key. In 3NF, all non-key attributes should be dependent only on the primary key, and not on other non-key attributes. Therefore, to achieve 3NF, any transitive dependencies need to be eliminated.

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6. In Einstein's theory , the deflection of light is                   as great as it according to Newton's theory

Explanation

According to Einstein's theory, the deflection of light is twice as great as it is according to Newton's theory.

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7. A galvanometer can be used as a voltmeter by connecting a

Explanation

A galvanometer is a device used to measure small electric currents. In order to use it as a voltmeter, it needs to be connected in series with a high resistance. This is because a voltmeter is used to measure voltage, which is the potential difference across a circuit. By connecting a high resistance in series with the galvanometer, the current passing through it will be reduced, allowing it to measure the voltage accurately without affecting the circuit.

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8. BIT stands for _________.

Explanation

The correct answer is "Binary digit" because the acronym BIT stands for Binary digit. In computing and digital systems, a bit is the basic unit of information and can have two possible values, 0 or 1, representing binary digits. Therefore, BIT is commonly used to refer to a single binary digit.

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9. The meaning of the idiomatic phrase,  "Dance with the Death" is:

Explanation

The phrase "Dance with the Death" is an idiomatic expression that means engaging in an activity or taking a risk that is extremely dangerous or risky. It implies participating in something that could potentially lead to harm or even death.

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10. The sides of a are , then largest angle is:

Explanation

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11. Which of the following is renewable energy source?

Explanation

Biomass is considered a renewable energy source because it is derived from organic matter such as plants, agricultural waste, and wood. These materials can be replenished over time through natural processes like photosynthesis, making biomass a sustainable energy option. In contrast, natural gas, coal, and uranium are non-renewable sources as they are finite and take millions of years to form.

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12. Which symbol is used to separate DNS and user name in an email address?

Explanation

The symbol "@" is used to separate the DNS (Domain Name System) and user name in an email address. The DNS is the part of the email address that identifies the email server or provider, while the user name is the unique identifier for the specific email account within that server or provider. The "@" symbol is commonly used in email addresses to indicate this separation.

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13. Intelligence Quotient If in a certain language FASHION is coded as FOIHSAN, how is PROBLEM coded in that code?

Explanation

In the given language, the letters in the word FASHION are rearranged in reverse order. Therefore, to code the word PROBLEM, we need to rearrange the letters in reverse order as well. The correct code for PROBLEM would be PELBORM.

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14. The solution set for the equation is:

Explanation

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15. Android in relation to a mobile phone is:

Explanation

Android is an operating system that is specifically designed for mobile devices such as smartphones and tablets. It provides a platform for running applications and managing the device's hardware and software resources. Unlike a robot or a virus, Android is not a physical entity or a malicious program. It is a software system that allows users to interact with their mobile phones and perform various tasks. Therefore, the correct answer is that Android is an operating system.

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16. If CIGARETTE is coded as GICERAETT, then DIRECTION will be coded as

Explanation

The given word "CIGARETTE" is coded by rearranging the letters in odd positions and then followed by rearranging the letters in even positions. Applying the same logic to the word "DIRECTION", we rearrange the letters in odd positions to get "RIDTCENOI". Therefore, the correct answer is "RIDTCENOI".

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17. If a force is acting on moving body with constant velocity then power delivered to body at any instant is:

Explanation

If a force is acting on a moving body with constant velocity, then the power delivered to the body at any instant is 7 W. This is because power is calculated by multiplying the force applied to an object by its velocity. Since the force is acting on the body and the body is moving with a constant velocity, there is a non-zero power being delivered to the body, which is 7 W.

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18. If DC motor is overloaded as a result it allows to draw

Explanation

When a DC motor is overloaded, it means that the load on the motor is greater than its rated capacity. In this situation, the motor will draw a high current in an attempt to meet the increased demand. However, as the motor tries to compensate for the overload, the back electromotive force (back emf) generated by the motor decreases. The back emf is the voltage opposing the current flow in the motor, and it is directly proportional to the speed of the motor. Therefore, when the motor is overloaded and drawing a high current, it results in a decrease in the back emf.

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19. When an electron jumps from seventh orbit to forth orbit a particular Hydrogen band series formed which lies in

Explanation

When an electron jumps from the seventh orbit to the fourth orbit in a hydrogen atom, it releases energy. This energy corresponds to a specific wavelength of light. In the case of this particular jump, the wavelength of the emitted light falls within the infrared region of the electromagnetic spectrum. This means that the hydrogen band series formed by this electron transition can be observed in the infrared region.

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20. Which of the following is a conservative force?

Explanation

Centripetal force is a conservative force because it depends only on the position of an object and not on the path taken to reach that position. It is always directed towards the center of the circular motion and is responsible for keeping an object moving in a circular path. The work done by a conservative force is path-independent, meaning that the work done in moving an object from one point to another is the same regardless of the path taken.

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21. The direction in which a document is printed on a paper through printer is known as:

Explanation

Page orientation refers to the direction in which a document is printed on a paper through a printer. It determines whether the document will be printed in portrait (vertical) or landscape (horizontal) mode. This setting is important as it affects the layout and formatting of the document. By selecting the appropriate page orientation, the user can ensure that the document is printed in the desired direction and fits well on the paper.

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22. Database file has extension of:

Explanation

The correct answer is (.mdb) because the file extension .mdb is commonly used for Microsoft Access database files. This file format is used to store data in a structured manner and allows for easy retrieval and manipulation of the data using database management software. The other file extensions mentioned (.xls, .gif, .wav) are used for different purposes such as Excel spreadsheets, image files, and audio files respectively, and are not typically used for databases.

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23. A LAN is a combination of:

Explanation

A LAN (Local Area Network) is a combination of network adapter cards, LAN application software, and LAN cables. Network adapter cards are necessary to connect devices to the network, LAN application software allows devices to communicate and share resources within the network, and LAN cables are used to physically connect devices to the network. Therefore, all of these components are essential for the functioning of a LAN.

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24. Rabia is a noted dentist ______ in the region:

Explanation

The correct answer is "as well as an effective teacher." This answer correctly completes the sentence by introducing another aspect of Rabia's profession, which is being an effective teacher. The phrase "as well as" is used to indicate that Rabia is not only a noted dentist, but also an effective teacher.

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25. Significant figures in the final answer of are

Explanation

The answer is 2 because significant figures are the digits in a number that carry meaning in terms of precision. In this case, the final answer has 2 significant figures, indicating that there are two digits that are known with certainty and carry meaning in the context of the calculation.

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26. Absolute zero on the Fahrenheit scale equals to 

Explanation

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27. The relationship between country to its capital is an example of:

Explanation

The relationship between a country and its capital is a one-to-one relationship because each country has only one capital. Each country is uniquely associated with its capital, and there is no overlap or duplication in this relationship. Therefore, the correct answer is "One of one."

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28. The arithmetic logic unit (ALU) performs the following actions:

Explanation

The arithmetic logic unit (ALU) is responsible for performing arithmetic operations such as addition and subtraction, as well as logical comparisons such as equal, greater than, and less than. Therefore, the correct answer is that the ALU performs both B (performing arithmetic operations) and C (performing logical comparisons).

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29. SQL is

Explanation

SQL (Structured Query Language) is a structured language used for managing and manipulating relational databases. It is specifically designed for querying, inserting, updating, and deleting data in a structured manner. SQL follows a specific syntax and set of rules to ensure data integrity and consistency. It is not an unstructured language like natural languages, nor is it an object-oriented language like Java or C++. SQL is a software tool that allows users to interact with databases and perform various operations on the data stored within them.

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30. At a point 15 meters away from the base of 15 meters high house, the angle of elevation of the top is:

Explanation

The angle of elevation of the top of a 15-meter high house from a point 15 meters away from its base can be determined using trigonometry. The angle of elevation is the angle between the horizontal line and the line of sight from the observer to the top of the house. In this case, we have a right triangle with the height of the house as the opposite side and the distance from the base as the adjacent side. Using the tangent function, we can calculate the angle of elevation as the arctan(15/15) which simplifies to 45 degrees.

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31. If ABCD is a parallelogram in which A(2,3), B (1,4) , C(0,5) , the coordinates of D are 

Explanation

The coordinates of D can be found by using the properties of a parallelogram. Since opposite sides of a parallelogram are parallel, the vector formed by the points A and B is equal to the vector formed by the points C and D.

Using the coordinates of A and B, we can calculate the vector AB as (1,1).

To find the coordinates of D, we need to add this vector to the coordinates of C.

Adding (1,1) to (0,5) gives us (1,6).

Therefore, the coordinates of D are (1,6).

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32. Ali wants to go to the university. He starts from his home which is in the East and comes to a crossing. The road to the left ends in a theater, straight ahead is the hospital. In which direction is the university?

Explanation

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33. Let i,j and k be unit vectors then 

Explanation

Since the question states that i, j, and k are unit vectors, this means that they have a magnitude of 1. Therefore, any scalar multiple of a unit vector will also have a magnitude of 1. In the given answer, the scalar multiple is 0, which means that the resulting vector will have a magnitude of 0. Hence, the correct answer is 0.

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34. The position of a particle at any time 't' is given by the relation whereas is a constant and , then dimensions of respectively are:

Explanation

The given relation represents the position of a particle at any time 't'. The position is given by the product of a constant 'a' and 't' raised to the power of 'n'. The dimensions of 'a' can be determined by analyzing the dimensions of the given relation. Since position has dimensions of length, 'a' must have dimensions of length divided by time to the power of 'n'. Therefore, the dimensions of 'a' are [L^(1-n) T^n].

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35. If a gymnast sitting on stool with his arms stretched lowers his arms:

Explanation

When a gymnast sitting on a stool with his arms stretched lowers his arms, the moment of inertia decreases. According to the conservation of angular momentum, when the moment of inertia decreases, the angular speed increases. This means that the gymnast's rotational speed increases as he lowers his arms.

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36. Computer Science Which of the following is not true about token ring protocol?

Explanation

The token ring protocol is a network protocol that allows devices to take turns transmitting data on a network. One of the characteristics of this protocol is that there is only one token in the network, which is passed from one device to another to control access to the network. Another characteristic is that no collision can occur because only the device with the token can transmit data. However, the statement "Uses central device" is not true because the token ring protocol does not require a central device to control the network.

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37. Which of the following functions is/are odd ?

Explanation

The correct answer is III only because an odd function is symmetric about the origin. This means that if you reflect the function across the y-axis, it remains the same. Function III satisfies this condition, while functions I and II do not.

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38. Which of the following acts as capillary tube?

Explanation

All of the options mentioned in the question can act as a capillary tube. A capillary tube is a narrow tube with a small internal diameter that is used to transport fluids or gases. Both gas pipes and water pipes can be designed with a small internal diameter to create capillary action. Similarly, a syringe also has a narrow tube that allows for the movement of fluids through capillary action. Therefore, all of these options can function as capillary tubes.

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39. If the displacement of a particle executing SHM is given by  in meters, then the frequency and maximum velocity of the particle are:

Explanation

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40. If electron  accelerated by potential difference of 54 V. If mass of electron increases sixteen times by keeping the potential difference constant. The wavelength of electron 

Explanation

When an electron is accelerated by a potential difference, its kinetic energy increases. According to the de Broglie wavelength equation, the wavelength of a particle is inversely proportional to its momentum. Since momentum is directly proportional to the square root of kinetic energy, increasing the kinetic energy of the electron will decrease its wavelength. If the mass of the electron increases sixteen times while the potential difference remains constant, its kinetic energy will decrease by a factor of sixteen. Therefore, the wavelength of the electron will decrease by a factor of four (not sixteen), resulting in the correct answer: decreases four times.

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41. What is the value of integer a, b, c after execution of following code: int x=50; if(x>40) a=10; if(x>45) a=2; for(int i=0 ; a == 2 ; i ++ ) a++; b=a; c=a*b;

Explanation

The initial value of x is 50. The first if statement checks if x is greater than 40, which is true. Therefore, a is assigned a value of 10. The second if statement checks if x is greater than 45, which is also true. Therefore, a is reassigned a value of 2. The for loop then executes as long as a is equal to 2. In the first iteration of the loop, a is incremented by 1, making it 3. Since a is no longer equal to 2, the loop terminates. After the loop, b is assigned the value of a, which is 3. Finally, c is assigned the value of a multiplied by b, which is 9. Hence, the values of a, b, and c after the execution of the code are 3, 3, and 9 respectively.

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42. Which of the following systems of equations has as solution set?

Explanation

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43. Choke is basically a

Explanation

The correct answer is LR series circuit. In an LR series circuit, the components connected in series are an inductor (L) and a resistor (R). This type of circuit allows the flow of current through the inductor, creating a magnetic field. The resistor limits the current flow. In an LR series circuit, the voltage across the inductor and resistor are in phase, and the impedance is determined by the values of the inductor and resistor.

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44. In transistor, which of the following statements is true ?

Explanation

The correct answer is "Emitter-base junction is forward biased by". In a transistor, the emitter-base junction is typically forward biased to allow the flow of current from the emitter to the base. This forward biasing helps in the amplification of the input signal and controls the current flow through the transistor.

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45. A+=b is equivalent to:

Explanation

The expression a+=b is equivalent to a=a+b. This means that the value of a is updated by adding the value of b to it. The shorthand notation += is used to perform this addition and assignment operation in a single step. Therefore, the correct answer is a=a+b.

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46. Which of the following statements is/are true? I) Any conditional and its Contrapositive are equivalent II) Converse and Contrapositive are equivalent III) Converse and Inverse are equivalent IV) Inverse and Contrapositive are equivalent 

Explanation

The correct answer is "I and III only".



Statement I is true because a conditional statement and its contrapositive have the same truth value. The contrapositive is formed by negating both the hypothesis and the conclusion of the conditional statement.

Statement III is also true because the converse and the inverse of a conditional statement have the same truth value. The converse is formed by switching the hypothesis and the conclusion of the conditional statement, while the inverse is formed by negating both the hypothesis and the conclusion.

Therefore, both statements I and III are true, while statements II and IV are not equivalent to the others.

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47. If the density of a planet Z is increased by sixteen times then the value of gravity at that planet will become 

Explanation

If the density of a planet Z is increased by sixteen times, it means that there is more mass packed into the same volume. As gravity is directly proportional to mass, increasing the density will also increase the gravitational force. Therefore, the value of gravity at that planet will become sixteen times increased.

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48. Select the correct spelling:

Explanation

The correct spelling is "Auspicious." This word means favorable or promising, often used to describe a situation or event that is likely to bring good fortune or success.

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49. Complete sequence with appropriate number 4,9,25,49,121,169,? 

Explanation

The given sequence follows a pattern where each number is the square of a prime number. Starting with 2, we have 2^2 = 4. Then, 3^2 = 9, 5^2 = 25, 7^2 = 49, 11^2 = 121, 13^2 = 169. The next prime number is 17, so 17^2 = 289. Therefore, the missing number in the sequence is 289.

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50. The angle coterminal with is:

Explanation

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51. If BD and CA are parallel to each other forming ABCD rectangular region such that OA is double the  length of OE with its length d. Then find the shaded area of the region .

Explanation

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52. The domain of is:

Explanation

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53. If the line joining A(7,3) and B(k,6) is parallel to line joining C(-4,5) and D(-6,4) then the value of 'k' is:

Explanation

If the line joining A(7,3) and B(k,6) is parallel to the line joining C(-4,5) and D(-6,4), then the slopes of the two lines must be equal. The slope of the line AB is (6-3)/(k-7) = 3/(k-7). The slope of the line CD is (4-5)/(-6-(-4)) = -1/-2 = 1/2. Setting the two slopes equal and solving for k, we get 3/(k-7) = 1/2. Cross-multiplying gives 6 = k-7, and solving for k, we find k = -11.

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54. The radius  of the circle is:

Explanation

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55. The magnifying power of telescope is 9. When it is adjusted for parallel rays the distance between the objective and eyepiece is 20 cm. The focal length of the objective is:

Explanation

When a telescope is adjusted for parallel rays, the magnifying power is given by the formula: Magnifying Power = 1 + (focal length of objective / focal length of eyepiece). In this case, the magnifying power is 9. Rearranging the formula, we get: focal length of objective = (Magnifying Power - 1) * focal length of eyepiece. Substituting the given values, we have: focal length of objective = (9 - 1) * 20 cm = 8 * 20 cm = 160 cm = 1.6 m. Therefore, the focal length of the objective is 1.6 m, which is equal to 160 cm or 18 cm.

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56. Number of electrons pass through an electric bulb in one minute if the 300 mA current is passing through it, is:

Explanation

The number of electrons passing through an electric bulb in one minute can be calculated using the formula: number of electrons = current (in amperes) * time (in seconds) / charge of an electron. Since the current is given in milliamperes (mA), it needs to be converted to amperes by dividing it by 1000. The charge of an electron is a constant value of 1.6 * 10^-19 coulombs. Therefore, the number of electrons passing through the bulb in one minute can be calculated as (300 mA / 1000 A) * 60 s / (1.6 * 10^-19 C).

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57. Which one the following requires periodic refreshing to maintain data:

Explanation

DRAM (Dynamic Random Access Memory) requires periodic refreshing to maintain data. Unlike SRAM (Static Random Access Memory), which can hold data without refreshing, DRAM cells are designed to store data as electrical charges in capacitors. However, these charges tend to leak over time, causing the data to degrade. To prevent this, DRAM needs to be refreshed periodically by reading and then rewriting the data. This refreshing process is necessary to maintain the integrity of the stored information in DRAM.

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58. Which of the following manner is used for function call

Explanation

The correct answer is Stack because a stack data structure follows the Last-In-First-Out (LIFO) principle, which means that the last function call made will be the first one to be executed. This is similar to how a stack of plates works, where the last plate added is the first one to be taken off. In a stack, the function calls are pushed onto the stack as they occur and popped off the stack when they are completed, ensuring that the functions are executed in the order they were called.

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59. If the matrix AB is a zero matrix, then 

Explanation

If the matrix AB is a zero matrix, it means that all the elements in the matrix AB are zero. In order for this to happen, it is not necessary for either matrix A or matrix B to be zero. It is also not necessary for both matrices A and B to be zero. There could be other combinations of non-zero matrices A and B that when multiplied together, result in a zero matrix AB. Therefore, it is not necessary that either A=O or B=O or both are zero.

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60. The mass of fuel consumed by a typical moving rocket to overcome the earth's gravity is at the rate of 

Explanation

The mass of fuel consumed by a typical moving rocket to overcome the earth's gravity is at the rate of a constant force. This force is known as the thrust force and is generated by the rocket engines. The thrust force propels the rocket forward and counteracts the force of gravity, allowing the rocket to overcome the gravitational pull of the Earth. The rate at which fuel is consumed determines how long the rocket can sustain its thrust and how far it can travel.

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61. Which of the following is the closest meaning of "FELICITY"?

Explanation

Rapture is the closest meaning to "FELICITY" because it refers to a state of extreme happiness, joy, or bliss. "Anguish," "Agony," and "Affliction" all have negative connotations and are the opposite of felicity, which means happiness or great joy. Therefore, "Rapture" is the most appropriate choice as it aligns with the meaning of felicity.

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62. If force is acting on a surface of object perpendicularly in a time interval t, whereas F is measured in newtons. The dimensions of a  and b respectively are:

Explanation

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63. Analogy Soot:Grimy

Explanation

The analogy in the given options is based on the relationship between two words. In the given analogy, "soot" is related to "grimy" as both words describe something dirty or covered in dirt. Similarly, "rain" is related to "sodden" as rain often makes things wet or soaked. Therefore, the correct answer is "Rain:Sodden".

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64. =

Explanation

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65. Sum of the series is:

Explanation

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66. The infinite Geometric series 

Explanation

An infinite geometric series diverges when the absolute value of the common ratio is greater than or equal to 1. In this case, since the series is not specified, we cannot determine the common ratio. Therefore, we cannot determine if the series converges or diverges.

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67. Equationrepresents to which of following conic section?

Explanation

The equation represents an ellipse because the general form of the equation for an ellipse is (x-h)^2/a^2 + (y-k)^2/b^2 = 1, where (h,k) represents the center of the ellipse and a and b represent the lengths of the major and minor axes respectively. The given equation matches this form, indicating that it represents an ellipse.

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68. In the parallelogram ABCD, what is value of x?

Explanation

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69. The existence of a positron was predicted by 

Explanation

Paul Dirac predicted the existence of a positron.

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70. All of the following are types of register expect:

Explanation

The given options are all types of registers used in computer systems, except for the math coprocessor register. An accumulator register is used to store intermediate results during arithmetic and logical operations. A segment register is used to store the starting address of a memory segment. A counter register is used to keep track of the number of times a particular event occurs. However, a math coprocessor register is not a type of register commonly found in computer systems.

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71. Which shortcut key is used to change the letter case?

Explanation

The shortcut key Shift + F3 is used to change the letter case. This shortcut allows users to quickly toggle between uppercase, lowercase, and title case for selected text.

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72. A company has 10 software engineers and 6 civil engineers. In how many ways can they be seated around a round table so that no two of the civil engineers will sit together?

Explanation

The total number of engineers is 16. To ensure that no two civil engineers sit together, we can alternate the seating arrangement between software engineers and civil engineers. The number of ways to arrange the software engineers is 10!, and the number of ways to arrange the civil engineers is 6!. Since the table is round, we need to divide the total number of arrangements by the number of engineers (16) to account for rotations. Therefore, the total number of ways to seat them is (10! * 6!) / 16.

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73. Resistivity of copper is:

Explanation

Resistivity of copper is low. Copper is a good conductor of electricity due to its low resistivity. This means that it allows the flow of electric current with minimal resistance. Copper is commonly used in electrical wiring and circuitry because of its excellent conductivity properties. Its low resistivity ensures efficient transmission of electricity without significant loss of energy.

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74. English Select the correct Sentence: 

Explanation

The correct sentence is "Either he or I has been visiting the fair." This is because when using "either...or" constructions, the verb agrees with the noun closest to it. In this case, "I" is closer to the verb "has been," so it should be singular.

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75. Real part of is:

Explanation

The real part of a complex number is the part that does not involve the imaginary unit. In this case, the correct answer is 2035, as it is the only option that does not involve any imaginary unit. The other options (-2116 and 828) involve the imaginary unit, making them incorrect.

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76. A magnet drops down a long vertical copper tube. As it falls down the tube its velocity

Explanation

The velocity of the magnet remains constant as it falls down the copper tube. This is because copper is a non-magnetic material and does not interact with the magnet's magnetic field. Therefore, there is no force opposing the magnet's motion, causing it to maintain a constant velocity throughout its fall.

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77. In pure capacitive circuit, AC passes through the capacitor. Which of the following statement is true?

Explanation

In a pure capacitive circuit, the current leads the voltage by 90 degrees. This means that the vector length of the potential (voltage) is greater than that of the current. Since the voltage leads the current, it reaches its peak value before the current does, resulting in a greater vector length.

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78. Which function does not echo typed character?

Explanation

The getch() function does not echo the typed character. Unlike scanf() and getche(), which both display the typed character on the screen, getch() reads a single character from the keyboard without displaying it.

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79. 'Goto' can be used:

Explanation

The correct answer is "All of these" because the "goto" statement can be used to exit from the loop body, as an alternative to the "break" statement, and to create an infinite loop. The "goto" statement allows the program to jump to a specified label within the code, which can be used to control the flow of execution in various ways.

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80. Which of the following is the closest meaning of "MALICIOUS"?

Explanation

The word "malicious" refers to having the intention to harm or cause trouble. The word "rancorous" also means having bitter and resentful feelings, which aligns closely with the meaning of "malicious." Therefore, "rancorous" is the closest meaning to "malicious" among the given options.

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81. The sum of n terms of will be:

Explanation

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82. Which is the opposite meaning of the word "CANDID" ?

Explanation

The word "candid" means honest, open, and straightforward. The opposite of this would be "guileful," which means deceitful or dishonest. "Ingenuous" also means honest and open, so it cannot be the opposite. "Evasive" means avoiding or dodging the truth, which is similar to being candid but not the opposite. "Contentious" means causing or likely to cause an argument or disagreement, which is unrelated to being candid. Therefore, the opposite meaning of "candid" is "guileful."

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83. Set of residue classes modulo 4 is an abelian group w.r.t '+', then inverse of 3 is:

Explanation

In an abelian group, the inverse of an element is the element that, when added to the original element, results in the identity element (which is usually denoted as 0). In this case, the set of residue classes modulo 4 is an abelian group, so the inverse of 3 would be the element that, when added to 3, gives the identity element 0. The only option that satisfies this condition is 1, as 3 + 1 = 4, which is congruent to 0 modulo 4. Therefore, the correct answer is 1.

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84. is the slope of tangent to which of following conic?

Explanation

The correct answer is Parabola because the slope of the tangent to a parabola at any point is equal to the derivative of the parabola's equation at that point. This is a unique property of parabolas and is not applicable to ellipses, hyperbolas, or circles.

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85. A lead ball and a feather are dropped in vacuum both at the same time. Which of the following statements is true?

Explanation

In a vacuum, where there is no air resistance, both the lead ball and the feather will fall at the same time. The force of gravity acts on both objects equally, regardless of their mass. Therefore, both objects will experience the same acceleration and will fall at the same rate.

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86. Which one do you like?

Explanation

The correct answer is {1,-3} because it is the only option that includes a negative number.

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87. approximately equals to:

Explanation

The correct answer is 0.965 because it is the closest value to the given approximation of "approximately equals to". The other options are further away from the given value and therefore not the correct answer.

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88. If a circle is inscribed in an equilateral triangle with radius r and a circle which is circumscribe to same equilateral triangle with radius R then the ratio of areas of circumscribed to inscribe circle is:

Explanation

The ratio of the areas of the circumscribed circle to the inscribed circle in an equilateral triangle can be found by comparing the radii of the two circles. In this case, the radius of the circumscribed circle is R, while the radius of the inscribed circle is r. The area of a circle is proportional to the square of its radius. Therefore, the ratio of the areas of the two circles is (R^2)/(r^2).

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89. What is the area of shaded region 'A' and 'B' are mid points of the sides whose length is 10 cm. (Both triangles are equilateral)? 

Explanation

The area of the shaded region can be found by subtracting the area of the two equilateral triangles from the area of the larger equilateral triangle. The area of an equilateral triangle can be calculated using the formula (sqrt(3)/4) * side^2. In this case, the side length of the larger triangle is 10 cm, so its area is (sqrt(3)/4) * 10^2 = 25sqrt(3) cm^2. The side length of the smaller triangles is half of the larger triangle, which is 5 cm. So each smaller triangle has an area of (sqrt(3)/4) * 5^2 = 25/4 sqrt(3) cm^2. Therefore, the area of the shaded region is 25sqrt(3) - 2(25/4 sqrt(3)) = 25/2 sqrt(3) cm^2.

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90. What is the ratio of the shaded area to un-shaded area?

Explanation

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91. If and l,m are negative whereas n is positive then which of the following statement is true?

Explanation

If l and m are negative while n is positive, it means that both l and m have values less than zero while n has a value greater than zero. In this case, all of the given statements could be true because the "all of these" option implies that all the statements are true. Since we don't have any specific statements provided, we can't determine which ones are true, but we can conclude that it is possible for all of them to be true based on the given information.

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92. If a ball in a bowl from its extreme position leaves to start oscillating with SHM  (Simple harmonic motion). Which of the following statements is/are valid?

Explanation

In simple harmonic motion (SHM), the ball is in stable equilibrium at the mean position. This means that when the ball is at the mean position, it is in a state of equilibrium and will not move unless acted upon by an external force. At the extreme positions, the ball is in unstable equilibrium, meaning that it will accelerate back towards the mean position due to the restoring force. The acceleration of the ball is always in the direction opposite to the force applied, as the restoring force pulls the ball back towards the mean position. Therefore, the correct answer is that the ball is in stable equilibrium at the mean position.

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93. A resistance R is stretched to four times its length. Its new resistance will be

Explanation

When a resistance is stretched to four times its length, its resistance will increase by a factor of four. This is because resistance is directly proportional to the length of the conductor. So, if the length of the resistance is increased by a factor of four, its resistance will also increase by the same factor. Therefore, the new resistance will be four times the original resistance.

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94. Magnetic field inside a solenoid carrying a steady current I ,  if  the length of solenoid is doubled but the number of turns remains same then magnetic induction 

Explanation

When the length of the solenoid is doubled but the number of turns remains the same, the magnetic field inside the solenoid decreases. This is because the magnetic field produced by each turn of the solenoid weakens as the length of the solenoid increases. Therefore, when the length is doubled, the magnetic field strength decreases.

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95. On successfully closing a file, the fclose() returns:

Explanation

The fclose() function in C is used to close a file that has been opened using fopen(). On successfully closing a file, fclose() returns 0, which is equivalent to false in C. Therefore, the correct answer is False.

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96. In CRO, the brightness of the spot on the screen is controlled by:

Explanation

In a CRO (Cathode Ray Oscilloscope), the brightness of the spot on the screen is controlled by the grid. The grid is responsible for controlling the flow of electrons from the cathode to the screen. By adjusting the voltage applied to the grid, the intensity of the electron beam can be controlled, resulting in a brighter or dimmer spot on the screen. The cathode, focusing anode, and accelerating anode play different roles in the functioning of the CRO but do not directly control the brightness of the spot on the screen.

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97. The resistance of an iron wire at 0°C is . The resistance of wire at 500°C if the temperature coefficient of resistance of iron is is:

Explanation

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98. Which of the following is reverse biased pn junction?

Explanation

A reverse biased pn junction is a condition in which the p-side of the junction is connected to the negative terminal of a power supply and the n-side is connected to the positive terminal. In this configuration, the majority carriers (electrons in the n-side and holes in the p-side) are pushed away from the junction, creating a depletion region. A photodiode is a type of pn junction that is specifically designed to operate in reverse bias. When light is incident on the photodiode, it generates electron-hole pairs, which can be detected as a current. Therefore, the correct answer is Photo Diode.

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99. Analogy Fugitive : Fee

Explanation

The analogy "Fugitive : Fee" suggests that a fugitive is someone who is associated with a fee, meaning they have to pay a fee for their actions. Applying the same logic to the answer choices, "Braggart : Boast" makes sense because a braggart is someone who is associated with boasting, meaning they constantly boast about themselves. The relationship between the words in the analogy and the answer choice is one of association or characteristic.

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100. For any two complex numbers, , which of the following is true?

Explanation

The given correct answer for this question is "The product of two complex numbers is a complex number." This statement is true because when we multiply two complex numbers, we use the distributive property and the fact that the product of two imaginary units is -1. Therefore, the result of the multiplication will always be a complex number with both a real and imaginary part.

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101. Equation in which roots are double the roots of is:

Explanation

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102. Which of the following statements is/are valid about the degree of polynomial? I) It cannot be positive and zero II) It can be rational as well as irrational III) It can be negative 

Explanation

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103. .

Explanation

The given answer, 3, is the correct answer because it is the only option that is present in the given list of numbers (-3, 1, 3). The other options, -3 and 1, are not present in the list. Therefore, the correct answer can only be 3.

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104. Which of the following order of escape velocity of the planets is correct?

Explanation

The order of escape velocity of the planets is determined by their mass and radius. Escape velocity is the minimum velocity required for an object to escape the gravitational pull of a planet. The formula for escape velocity is v = sqrt(2GM/R), where G is the gravitational constant, M is the mass of the planet, and R is the radius of the planet. Based on this formula, the correct order of escape velocity for the planets from highest to lowest is: Jupiter, Earth, Mars, Moon.

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105. A logical interface to a file is called:

Explanation

A logical interface to a file is called a stream. A stream is a sequence of data that can be read from or written to a file. It provides a way to access and manipulate the contents of a file in a structured manner. Streams can be used to perform various operations on files, such as reading data from a file or writing data to a file. Therefore, the correct answer is stream.

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106. A particle executing SHM, time to reach half of its amplitude is 1 sec. The time period of particle executing simple harmonic motion will be:

Explanation

The time period of a particle executing simple harmonic motion is the time taken for one complete cycle of oscillation. In this case, the particle takes 1 second to reach half of its amplitude. Since it takes half the time period to reach half of the amplitude, the total time period must be 2 seconds. Therefore, the correct answer is 12 seconds, as it is the only option that corresponds to a time period of 2 seconds.

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107. Dielectric which is introduced between the parallel plate capacitor are                          in nature.

Explanation

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108. RLC components are connected in series to a source of alternating voltage, which of the following statement will be true?

Explanation

At resonance frequency, the impedance of the circuit is maximum because the reactive components cancel each other out, resulting in only the resistance contributing to the impedance. However, the current is minimum because the impedance is at its maximum and restricts the flow of current through the circuit.

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109. Each member of a sport club plays at least of soccer, rugby or tennis. The following information is known: 43 members play tennis, 11 play tennis and soccer, 6 play soccer and rugby, 84 play rugby or tennis, 68 play soccer or rugby and 4 play all three sports. How many members are there in sports club?.

Explanation

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110. The system: has infinitely many solutions if 

Explanation

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111. If and then , the general solution is

Explanation

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112. A function which is to be maximized or minimized is called:

Explanation

An objective function is a function that is to be maximized or minimized in mathematical optimization problems. It represents the goal or objective of the problem and is usually defined in terms of the decision variables. The objective function provides a measure of how well a particular solution satisfies the problem's requirements or constraints. In optimization, the aim is to find the values of the decision variables that optimize or achieve the best possible value of the objective function. Therefore, an objective function is the correct term for a function that is to be maximized or minimized.

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113. Section of right circular cone by a plane not parallel to any generator of the cone and not perpendicular or parallel to the axis of the cone, represents:

Explanation

When a plane intersects a right circular cone in a way that it is not parallel to any generator of the cone and not perpendicular or parallel to the axis of the cone, the resulting shape is an ellipse. An ellipse is a closed curve that is symmetric about its center, with two distinct foci. The shape of the intersection depends on the angle and position of the intersecting plane, but it will always be an ellipse.

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114. Variables are created in

Explanation

Variables are created in RAM (Random Access Memory). RAM is a type of computer memory that allows data to be stored and accessed quickly by the computer's processor. When a variable is created, it is stored in RAM so that the processor can easily access and manipulate its value. RAM is volatile memory, meaning that its contents are lost when the computer is turned off, so variables need to be saved to a more permanent storage, such as a hard disk, if their values need to be retained after the computer is shut down.

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115. What is the closest meaning of idiomatic phrase "Every cloud has a silver lining"

Explanation

The idiomatic phrase "Every cloud has a silver lining" means that even in a difficult or negative situation, there is always a positive aspect or outcome. It encourages optimism and the belief that something good can come out of every adversity.

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116. Complete the sequence with appropriate number 1,5,17,37,?

Explanation

The given sequence follows a pattern where each number is obtained by adding the square of the previous number and subtracting the previous number itself. Starting with 1, we have 1 + (1^2) - 1 = 1. Moving to the next number, 5 + (5^2) - 5 = 17. Continuing this pattern, we get 37 + (37^2) - 37 = 1369. Therefore, the next number in the sequence would be 1369 + (1369^2) - 1369 = 2274493. However, this number is not provided as an option. The closest option to this number is 65, which may be a possible alternative based on the pattern.

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117. Which one do you like?

Explanation

The explanation for the given answer of 10 is not provided.

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118. The infinite geometric seriesis a:

Explanation

An infinite geometric series is a convergent series because it has a finite sum when the common ratio is between -1 and 1. In this type of series, each term is obtained by multiplying the previous term by a constant factor called the common ratio. As long as the common ratio is within the specified range, the terms of the series gradually decrease in magnitude and approach zero, resulting in a finite sum.

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119. Which of the following trigonometric function has the graph given below 

Explanation

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120. Period of is:

Explanation

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121. A 2 m tall cylinder, full of water, has four identical holes at heights 1.8 m, 1.2 m , 90.6 m and 0.3 m from the ground. The speed of efflux is maximum from:

Explanation

The speed of efflux is determined by the height of the water above the hole. The higher the water column, the greater the pressure and the faster the water will flow out. Therefore, the hole at 0.3 m from the ground will have the highest speed of efflux because it has the greatest height of water above it compared to the other holes.

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122. When a fog droplet falls through air, the net force acting on the droplet becomes

Explanation

As the fog droplet falls through air, it experiences two forces: gravity pulling it downwards and air resistance pushing it upwards. When these two forces are equal in magnitude and opposite in direction, the net force acting on the droplet becomes zero. This means that the droplet reaches a state of equilibrium where it neither accelerates nor decelerates, resulting in a net force of zero.

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123. A body starts SHM and move from in and then move further from  then:

Explanation

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124. A charge is situated in the center of cube. The electric flux through each face of cube is:

Explanation

The electric flux through each face of the cube is the same. This is because the electric field due to the charge is radially symmetric, meaning it points directly away from the charge in all directions. As a result, the electric field lines passing through each face of the cube are parallel and have the same magnitude. Therefore, the electric flux through each face of the cube is equal.

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125. Pick the odd one out

Explanation

The odd one out in this group is the Sparrow because it is the only land-dwelling bird, while the other three options are all marine animals. The Whale, Dolphin, and Bat are all known for their ability to swim and live in water, whereas the Sparrow is a small bird that primarily lives and flies on land. Therefore, the Sparrow stands out as the different option in this group.

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126. In partial fraction resolution then:

Explanation

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127. The term independent of x in is:

Explanation

The term independent of x in the given expression is 49. This means that no matter what value x takes, the term 49 will remain constant and not change. The other options (-1, 84, None of these) are not independent of x as they would vary with different values of x.

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128. Which of the following  has the  numerical greatest value?

Explanation

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129. Newton calculated speed of sound at STP equals to:

Explanation

Newton calculated the speed of sound at STP to be approximately 332 meters per second. This value is derived from Newton's formula, which states that the speed of sound in a gas is equal to the square root of the ratio of the elasticities of the gas and the density of the gas. At standard temperature and pressure (STP), the elasticity of the gas is assumed to be constant, allowing for the calculation of the speed of sound using this formula.

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130. What will be the output of given code int x=0; while ( x < 7 ) { printf("%d",x); x+=3;}

Explanation

The given code initializes the variable x to 0 and then enters a while loop. Inside the loop, it prints the value of x using the printf function and then increments x by 3. This process continues until x is no longer less than 7.

At the first iteration, x is 0 and it prints 0. Then, x becomes 3. At the second iteration, x is 3 and it prints 3. Then, x becomes 6. At the third iteration, x is 6 and it prints 6. Then, x becomes 9, which is not less than 7, so the loop ends.

Therefore, the output of the given code will be 036.

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131. Which of the following is the closest meaning of "ARDUOUS"

Explanation

The word "arduous" means difficult, challenging, or demanding. Among the given options, "strenuous" is the closest in meaning to "arduous" as it also refers to something that requires great effort, energy, or strength. "Soft" means gentle or easy, which is the opposite of "arduous." "Energetic" refers to having a lot of energy but does not necessarily imply difficulty. "Remarkable" means extraordinary or exceptional, which is not synonymous with "arduous." Therefore, the correct answer is "strenuous."

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132. Period of vibration of an atom in a solid is:

Explanation

The period of vibration of an atom in a solid is determined by the strength of the interatomic forces and the mass of the atom. In a solid, atoms are held together by bonds, and they vibrate around their equilibrium positions. The stronger the interatomic forces, the greater the force required to displace the atom from its equilibrium position, resulting in a longer period of vibration. Similarly, a heavier atom will have a longer period of vibration compared to a lighter atom, as it requires more energy to move the heavier atom. Therefore, the period of vibration of an atom in a solid depends on the strength of interatomic forces and the mass of the atom.

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133. Eccentricity of Earth is

Explanation

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134. Select the correct sentence.

Explanation

The correct sentence is "She made the boy do the whole work." This sentence is grammatically correct because it uses the verb "do" without the preposition "to" after the verb "made." When using the verb "made" to indicate causing someone to do something, the infinitive form of the verb should be used without "to." Additionally, the word order in the sentence is correct, with "the whole work" following the verb "do."

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135. Reading Comprehension: Direction to solve: I felt the wall of the tunnel shiver. The master alarm squealed through my earphones. Almost simultaneously, Jack yelled down to me that there was a warning light on. Fleeting but spectacular sights snapped into ans out of view, the snow, the shower of debris, the moon, looming close and big, the dazzling sunshine for once unfiltered by layers of air. The last twelve hours before re-entry were particular bone-chilling. During this period, I had to go up in to command module. Even after the fiery re-entry splashing down in 81º water in south pacific, we could still see our frosty breath inside the command module.   The word 'Command Module' used twice in the given passage indicates perhaps that it deals with

Explanation

The word "Command Module" is mentioned twice in the passage, indicating that it is a significant element of the story. The passage also mentions various details related to space travel, such as the view of the moon, the shower of debris, and the fiery re-entry. These details suggest that the passage is describing a journey into outer space. Therefore, the correct answer is a journey into outer space.

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136. Ifthen 

Explanation

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137.  If  and , then which one of the following is a Bijective function from X to Y?

Explanation

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138. The area bounded by the x-axis and the curve is:

Explanation

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139. If yellow light in the Young's double slit experiment is replaced by blue light, the fringe width will

Explanation

When yellow light is replaced by blue light in the Young's double slit experiment, the fringe width will decrease. This is because the fringe width is inversely proportional to the wavelength of light used. Blue light has a shorter wavelength compared to yellow light, so when the wavelength decreases, the fringe width also decreases. Therefore, the interference pattern produced by blue light will have narrower and closer together fringes compared to the interference pattern produced by yellow light.

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140. A Carnot engine has an efficiency of 50% when its sink temperature is at 27 °C  . The temperature of source is:

Explanation

A Carnot engine's efficiency is given by the formula: efficiency = 1 - (Tc/Th), where Tc is the temperature of the sink and Th is the temperature of the source. In this case, the efficiency is given as 50%, which is equal to 0.5. Plugging in the given values into the formula, we get: 0.5 = 1 - (27/Th). Solving for Th, we find that Th = 54. Therefore, the temperature of the source is 327 °C.

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141. If A is to the south of B and C is to the east of B, in what direction is A with respect to C

Explanation

Based on the given information, A is located to the south of B and C is located to the east of B. Therefore, A is in the southwest direction with respect to C.

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142. Number of diagonals formed in a decagon is:

Explanation

A decagon is a polygon with 10 sides. To find the number of diagonals in a decagon, we can use the formula n(n-3)/2, where n represents the number of sides. Plugging in 10 for n, we get (10(10-3))/2 = 35. Therefore, the correct answer is 35.

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143.

Explanation

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144. Two fighter jets A and B have taken flight for air patrolling.  If fighter jet B is chasing the fighter jet A. What will be the effect on the speed of pursued plane (fighter jet B) when it returns the fire whereas jet A opens its fire firstly?

Explanation

When fighter jet B returns fire after fighter jet A opens fire, the speed of pursued plane (fighter jet B) will increase. This is because when fighter jet B returns fire, it will be in an aggressive and offensive mode, which will likely result in an increase in its speed as it tries to catch up and engage with fighter jet A.

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145. A gale (i.e. very strong wind)  blows over a house. The force due to the gale on the roof is:

Explanation

The force due to the gale on the roof is in the upward direction because when a strong wind blows over a house, the air pressure on the roof is lower compared to the inside of the house. This pressure difference creates an upward force on the roof, which counteracts the force of the wind pushing down on it. As a result, the net force on the roof is directed upwards.

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146. When a body of mass 1.0 kg is suspended from a certain light spring hanging vertically, its length increases by  . By suspending 2.0 kg block to the spring and if the block is pulled through  and released the maximum velocity in it in m/s is : (Acceleration due to gravity )

Explanation

When a body of mass is suspended from a light spring, it causes the spring to stretch. The amount of stretch is directly proportional to the mass of the body. In this case, when a 1.0 kg mass is suspended from the spring, its length increases by a certain amount. When a 2.0 kg mass is suspended from the same spring, it will cause the spring to stretch even further. When the block is pulled and released, it will oscillate back and forth. The maximum velocity of the block will occur when it is at the equilibrium position, which is the point of maximum stretch of the spring. Since the 2.0 kg mass causes more stretch in the spring, it will have a higher maximum velocity compared to the 1.0 kg mass. Therefore, the correct answer is 1 m/s.

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147. Select the correct sentence 

Explanation

The correct answer is "Three parts of business is left for me to do." This sentence is grammatically correct because it uses the singular form "is" to agree with the singular noun "Three parts of business." The verb "is left" indicates that there are still three parts of the business remaining for the speaker to do.

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148. A girl leaves from her home. She first walks 30 meters in North–west direction and then 30 meters in South–west direction. Next, she walks 30 meters in South-east direction. Finally, she turns towards her house. In which direction is she moving? 

Explanation

The girl initially moves 30 meters in the North-west direction, then 30 meters in the South-west direction, and finally 30 meters in the South-east direction. Since the North-west and South-west directions cancel each other out, the net movement is in the South-east direction. However, she then turns towards her house, which means she is moving in the opposite direction of the South-east, which is the North-east direction. Therefore, the girl is moving in the North-east direction.

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149. If is the complex cube root of unity then the value of is:

Explanation

The complex cube root of unity is a number that, when raised to the power of 3, equals 1. The possible values for the complex cube root of unity are 1, e^(2πi/3), and e^(4πi/3), where e is Euler's number and i is the imaginary unit. However, the given question does not specify which cube root of unity is being referred to. Since the answer is 1, it can be inferred that the question is referring to the principal cube root of unity, which is 1.

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150. .

Explanation

The answer is 8 because it is the only even number in the given list. The other numbers (4, 6, and 10) are also multiples of 2, but they are not the only even numbers in the list. Therefore, 8 is the correct answer.

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151. The electric field between the plates of an isolated air spaced parallel capacitor is E. What is the electric field between after immersing the capacitor in a liquid of relative permittivity 10?

Explanation

When the capacitor is immersed in a liquid with a relative permittivity of 10, the electric field between the plates decreases. This is because the relative permittivity, also known as the dielectric constant, is a measure of how well a material can store electrical energy in an electric field. A higher relative permittivity means that the material can store more electrical energy, which reduces the electric field between the plates. Therefore, the electric field between the plates after immersing the capacitor in the liquid will be E/10.

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152. If a body A is charged with charge q and is touched with a neutral body B and then neutral body C. then what will be charge on body C after contact?

Explanation

When body A, which has a charge q, is touched with a neutral body B, some of the charge from A is transferred to B, making B positively charged and A slightly less charged. When body C is then touched with body B, some of the positive charge from B is transferred to C, making C positively charged as well. Therefore, the charge on body C after contact will be positive.

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153. Memory is allocated to a local variable at the time of its:

Explanation

Memory is allocated to a local variable at the time of its definition. When a variable is defined, the compiler sets aside a specific amount of memory to store the value of that variable. This memory allocation occurs before the variable is used or referenced in the program.

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154. Select the closest meaning of "Voracious"  from given options

Explanation

The word "voracious" means having a very eager or insatiable appetite, especially for food. "Ravenous" is the closest meaning to "voracious" as it also refers to being extremely hungry or having an intense desire for food.

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155. Pick the odd one out

Explanation

The snake is the odd one out because it is the only animal that is not a reptile. The mongoose, tortoise, and frog are all reptiles, while the snake is a type of reptile. Therefore, the snake does not belong in the same category as the other three animals.

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156. If then 

Explanation

The given question "If then" does not provide any clear condition or statement to determine the answer. Therefore, it is not possible to generate a meaningful explanation for the given correct answer.

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157. In a suspension bridge, there is a stretch in the ropes by the load of the bridge. Which of the following moduli involves in it?

Explanation

In a suspension bridge, the stretch in the ropes is caused by the load of the bridge. This stretch can be explained by Young's modulus, which measures the elasticity of a material and its ability to deform under tension or compression. Young's modulus helps determine how much the ropes will stretch when subjected to the load of the bridge. The other options, Bulk modulus and Modulus of rigidity, are not directly related to the stretch in the ropes of a suspension bridge.

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158. Let two complex number and,then 

Explanation

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159. The domain of the function is:

Explanation

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160. When a platinum wire is heated it appears orange red light emitting through the wire at 

Explanation

When a platinum wire is heated, it undergoes a process called incandescence. Incandescence is the emission of light from a heated object. At lower temperatures, the wire emits light with longer wavelengths, such as red or orange. As the temperature increases, the wire emits light with shorter wavelengths, such as blue or white. Therefore, at 1100 °C, the platinum wire would appear orange-red in color as it emits light in that wavelength range.

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161. What will be the missing part of the following loop which stores data in integer array having 10 elements: for(int i=0;i____;____)

Explanation

The missing part of the loop should be "i

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162. Mathematics If , then 

Explanation

The pattern in the given sequence is that each number is obtained by multiplying the previous number by 2. Starting with 2, we multiply it by 2 to get 4, then multiply 4 by 2 to get 8, and finally multiply 8 by 2 to get 16. Therefore, the next number in the sequence would be obtained by multiplying 16 by 2, which equals 32.

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163. If a set A contains 10 entries then no.of distinct functions from A to A is: 

Explanation

The number of distinct functions from set A to set A can be calculated by taking the number of elements in set A (which is 10 in this case) and raising it to the power of the number of elements in set A. In this case, since set A contains 10 entries, the number of distinct functions from A to A would be 10^10.

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164. .

Explanation

The correct answer is 2 because it is the only positive number among the given options. The other numbers (-2 and 3) are negative and positive respectively, but 2 is the only positive number.

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165. The antonym of "INDIGENOUS" is:

Explanation

The word "indigenous" refers to something or someone that is native or originating from a particular place. On the other hand, an "expatriate" is someone who lives outside their native country. Therefore, "expatriate" is the antonym of "indigenous" as it represents the opposite concept of being native or originating from a specific place.

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166.

Explanation

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167. What is the angle that given vector A makes with y-axis?

Explanation

The angle that a vector makes with the y-axis is the angle between the vector and the positive y-axis. To determine this angle, we can use trigonometry. We can calculate the angle by taking the inverse tangent of the ratio of the y-component of the vector to the x-component of the vector. This will give us the angle in radians. To convert it to degrees, we can multiply it by 180/π.

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168. The acceleration due to gravity on moon is of that on earth, what will be the mass of the body on moon, if its mass on earth is m?

Explanation

The acceleration due to gravity on the moon is about 1/6th of that on Earth. Therefore, the mass of the body on the moon will remain the same as its mass on Earth, regardless of the difference in gravitational acceleration.

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169. Which of following scientist did prove the wave nature of light firstly?

Explanation

Thomas Young is credited with proving the wave nature of light through his famous double-slit experiment. In this experiment, Young observed the interference pattern created by light passing through two closely spaced slits, which demonstrated the wave-like behavior of light. Young's work laid the foundation for the understanding of light as both a particle and a wave, and his experiment remains a cornerstone of the study of optics and quantum mechanics.

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170. Tin becomes a super conductor at which of following temperature?

Explanation

Tin becomes a superconductor at a temperature of 1.18 K. Superconductivity is a phenomenon where a material can conduct electricity without any resistance. Certain materials, such as tin, exhibit superconductivity at very low temperatures. At temperatures below the critical temperature, which for tin is 1.18 K, the electrical resistance drops to zero and the material becomes a superconductor.

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171. A virus that replicates itself is called a:

Explanation

A virus that replicates itself is called a worm. Unlike other types of viruses, worms have the ability to spread and replicate without the need for a host file or program. They can self-replicate and spread across networks, causing damage by consuming system resources and potentially compromising security. This distinguishes them from bugs, which are programming errors, vaccines, which are substances used to prevent infections, and bombs, which are malicious programs designed to cause harm to a computer system.

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172. According to a military code, SYSTEM is SYSMET and NEARER is AENRER. What is the code for FRACTION?

Explanation

The given question follows a pattern where each letter in the word is reversed and then the word is reversed as a whole. Applying this pattern to the word "FRACTION", we reverse each letter to get "NOITCARF" and then reverse the whole word to get "CARFNOIT". Therefore, the code for FRACTION is CARFNOIT.

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173. If orders of matrix B and C are and BA=C, then the order of matrix A is:

Explanation

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174. There are 15 boys and 10 girls in a class. If three students are selected at random, what is the probability that 1 girl and 2 boys are selected?

Explanation

To find the probability, we need to calculate the number of favorable outcomes (selecting 1 girl and 2 boys) divided by the total number of possible outcomes. The number of ways to select 1 girl from 10 is 10C1, and the number of ways to select 2 boys from 15 is 15C2. The total number of ways to select 3 students from 25 is 25C3. Therefore, the probability is (10C1 * 15C2) / 25C3.

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175. For what value of n,may be A.M between and ?

Explanation

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176. In a relational database, a single piece of information is called:

Explanation

In a relational database, a single piece of information is called a field. A field represents a specific attribute or characteristic of a record or entity in the database. It is the smallest unit of data that can be stored and manipulated within a database table. Fields are used to store different types of data such as numbers, text, dates, and more. They are organized into records, which are collections of fields that represent a complete set of information about a specific entity or object.

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177.

Explanation

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178. Let f(x) is differentiable function such that and then 

Explanation

The given question is incomplete as it does not provide any information about the function f(x) or the value of x. Therefore, it is not possible to generate an explanation for the correct answer.

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179. What must be the matrix X, if

Explanation

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180. Which of the following may not be general term of an arithmetic sequence?

Explanation

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181.

Explanation

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182. Which of the following function is used to get the current date?

Explanation

The function "None of these" is the correct answer because none of the given options (Exact(), Year(), Month()) are used to get the current date. The question is asking for a function that can retrieve the current date, but none of the options provided are capable of doing so.

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183.  is equal to:

Explanation

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184. If the eccentricity of a conic is given by then which of the following conditions of tangency for that conic will be valid? 

Explanation

The eccentricity of a conic determines the shape of the conic. If the eccentricity is greater than 1, the conic is a hyperbola. If the eccentricity is equal to 1, the conic is a parabola. If the eccentricity is less than 1, the conic is an ellipse. Therefore, the condition of tangency for a hyperbola will not be valid when the eccentricity is less than 1.

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185. The equation of the pair of straight lines passing through the origin and perpendicular to the pair of lines represented by is given by:

Explanation

The given equation represents a pair of lines in the form ax² + 2hxy + by² = 0. To find the pair of lines perpendicular to this, we need to change the signs of h. Therefore, the equation of the pair of straight lines passing through the origin and perpendicular to the given pair of lines is ax² - 2hxy + by² = 0.

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186. First mixture of gases filled in G-M tube was 

Explanation

The first mixture of gases filled in the G-M tube was Argon and Oxygen. This is because the G-M tube, also known as the Geiger-Muller tube, is commonly used to detect ionizing radiation. Argon gas is often used as a filling gas in G-M tubes because it is inert and does not react with the components of the tube. Oxygen is added to the mixture to enhance the detection efficiency of the tube, as it increases the ionization produced by the radiation. This combination of Argon and Oxygen allows for accurate and efficient detection of ionizing radiation in the G-M tube.

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187. Which file contains the program after translation into machine language?

Explanation

After a program is translated into machine language, it is stored in an executable file (exe file). This file contains the compiled code that the computer can directly execute. The exe file is the final version of the program that can be run by the operating system. The object file, on the other hand, is an intermediate file that contains the compiled code but is not yet in a format that can be directly executed. The source file is the original file that contains the program's source code before it is translated into machine language. Therefore, the correct answer is Exe file.

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188. The notation for differentiation of a function was introduced by:

Explanation

The notation for differentiation of a function was introduced by Lagrange.

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189. The distance of closest approach of an alpha particle fired at nucleus  with momentum 'p' is 'd'. The distance of closest approach when the alpha particle is fired at same nucleus with momentum 3p  will be:

Explanation

The distance of closest approach when the alpha particle is fired at the same nucleus with momentum 3p will be smaller than d. This is because the momentum of the alpha particle is directly proportional to its velocity, and a higher momentum means a higher velocity. As the alpha particle approaches the nucleus with a higher velocity, it will experience a stronger repulsive force due to the electrostatic interaction between the positively charged alpha particle and the positively charged nucleus. This stronger repulsive force will cause the alpha particle to deviate from its original path earlier, resulting in a smaller distance of closest approach.

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190. Two positive charges are separated by 3m distance. A positive charge is placed between them. If it is moving along y-axis., it will be in                  

Explanation

When a positive charge is placed between two positive charges, it will experience a repulsive force from both charges. If it is moving along the y-axis, the repulsive forces from the two charges will cause it to deviate from its path and become unstable. The repulsive forces will push it away from the equilibrium position, making it difficult for the charge to maintain a stable position between the two charges. Therefore, the correct answer is "Unstable".

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191. Which of the following is the closest meaning of "DOLOROUS"?

Explanation

The word "dolorous" means sorrowful or mournful. The closest meaning to "dolorous" among the given options is "lugubrious," which also means mournful or gloomy. "Jocund" means cheerful, "mirthful" means joyful, and "blithe" means carefree, so they are not similar in meaning to "dolorous."

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192. Let z be a complex number, if and , then z=

Explanation

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193. When the polynomial is divided by , then remainder is 5. What is the value of constant k?

Explanation

When a polynomial is divided by a constant, the remainder is equal to the constant. In this case, the remainder is given as 5. Therefore, the value of constant k must be 5.

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194. Physics Epoch is the unit:

Explanation

Epoch is a unit of time. It is a specific point in time that is used as a reference for measuring time intervals. In physics, an epoch is often used to define a starting point for a particular event or measurement. It helps in establishing a standard timeline and allows for accurate calculations and comparisons of time intervals. Therefore, it is correct to say that epoch is a unit of time.

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195. What is the closest meaning of the word "PREJUDICE?

Explanation

The word "prejudice" refers to a preconceived opinion or bias that is not based on reason or actual experience. "Detriment" is the closest meaning to "prejudice" as it implies harm, damage, or disadvantage caused by holding such biased opinions. This aligns with the negative connotations associated with prejudice, suggesting that it can have detrimental effects on individuals or groups.

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196. Reading Comprehension: Direction to solve: Laws of nature are not commands but statements of acts. The use of the word "law" in this context is rather unfortunate. It would be better to speak of uniformities in nature. This would do away with the elementary fallacy that a law implies a law giver. If a piece of matter does not obey a law of nature it is punished. On the contrary, we say that the law has been incorrectly started.   The laws of nature based on observation are:

Explanation

The correct answer is "subject to change in the light of new facts" because the passage states that the use of the word "law" in reference to the laws of nature is unfortunate and it would be better to speak of uniformities in nature. This implies that the laws of nature are not fixed or absolute, but rather can be subject to change based on new facts or observations.

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197. A balloon of mass 10 kg is raising up with an acceleration of . If the mass of 4 kg is removed from the balloon, its acceleration becomes

Explanation

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198. Which of the following Muslim scientists did contribute in field of Trigonometry?

Explanation

Muhammad Ibn Jabir Al-Battani is the correct answer because he made significant contributions to the field of trigonometry. He developed accurate astronomical tables and improved the measurement of angles and the calculation of trigonometric functions. His work greatly influenced later mathematicians and astronomers, and his name is often mentioned in the context of trigonometry.

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199. In printing, _____ takes cursor to new line:

Explanation

The correct answer is "/n". This is because "/n" is the escape sequence used in printing to take the cursor to a new line.

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200. Which one of the following statements does represent the Venn Diagram given below:  

Explanation

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Is equal to
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Let f(x) is differentiable function such that and then 
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 is equal to:
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First mixture of gases filled in G-M tube was 
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