Test Of Chapter : 1(Matter In Our Surroundings)
MCQ type questions(one option is correct)
- 1.
Matter is a substance which:
- A.
Has mass but do not occupy space
- B.
Occupy space but has no mass
- C.
Has mass and occupy space
- D.
None of the above
Correct Answer
C. Has mass and occupy spaceExplanation
Matter is a substance that has mass and occupies space. This means that matter is made up of particles that have physical properties such as mass, and these particles are arranged in a way that takes up space. Therefore, matter cannot exist without mass and cannot exist without occupying space.Rate this question:
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- 2.
Characteristics of particles of which matter is made up of:
- A.
They are continuously moving
- B.
They have space between them
- C.
They attract each other
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The characteristics mentioned in the question are all true for particles of matter. Particles of matter are continuously moving, as they possess kinetic energy. They also have space between them, which allows for the existence of different states of matter (solid, liquid, gas). Additionally, particles of matter attract each other through various forces such as gravity or electromagnetic forces. Therefore, all of the given statements accurately describe the characteristics of particles that make up matter.Rate this question:
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- 3.
Which of the following statement is true?
- A.
As temperature increases, particles of matter moves slower
- B.
As temperature increases, particles of matter moves faster
- C.
As temperature decreases, particles of matter moves faster
- D.
All of the above
Correct Answer
B. As temperature increases, particles of matter moves fasterExplanation
As temperature increases, the kinetic energy of particles also increases. This causes the particles to move faster and have more collisions with each other. Therefore, the statement "As temperature increases, particles of matter move faster" is true.Rate this question:
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- 4.
Movement of particles of matter is:
- A.
Minimum in solids
- B.
More in liquids
- C.
Maximum in gas
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The movement of particles of matter is minimum in solids because the particles are closely packed and have limited freedom to move. In liquids, the particles have more freedom to move and can slide past each other, resulting in more movement. In gases, the particles have maximum freedom of movement as they are widely spaced and can move freely in all directions. Therefore, all of the above options are correct as they describe the varying degrees of movement of particles in different states of matter.Rate this question:
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- 5.
The inter-particle force of attraction is:
- A.
Maximum in solids
- B.
Maximum in gases
- C.
Minimum in solids
- D.
Minimum in solids
Correct Answer
A. Maximum in solidsExplanation
In solids, the inter-particle force of attraction is maximum because the particles are closely packed together and have strong bonds between them. This results in a strong cohesive force, which keeps the particles in a fixed position and gives solids their definite shape and volume. In gases, the inter-particle force of attraction is minimum because the particles are far apart and have weak bonds or no bonds at all. This allows gases to easily change shape and volume, as the particles can move freely.Rate this question:
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- 6.
Which of the following has no definite volume:
- A.
Air
- B.
Water
- C.
Ice
- D.
Salt-Water solution
Correct Answer
A. AirExplanation
Air has no definite volume because it is a gas and can expand or contract to fill the space available to it. Unlike liquids or solids, which have a fixed volume, the volume of air can change depending on the pressure and temperature conditions. This property allows air to be easily compressed or expanded, making it different from the other options listed.Rate this question:
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- 7.
States of the matter can be changed by:
- A.
Changing temperature
- B.
Changing pressure
- C.
Changing temperature or pressure
- D.
None of the above
Correct Answer
C. Changing temperature or pressureExplanation
The states of matter can be changed by either changing the temperature or changing the pressure. When the temperature of a substance is increased or decreased, it can undergo a phase change, such as from a solid to a liquid or from a liquid to a gas. Similarly, altering the pressure can also cause a substance to change its state, for example, compressing a gas can cause it to liquefy. Therefore, both temperature and pressure have the ability to modify the state of matter.Rate this question:
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- 8.
The temperature at which solids melts into liquids at atmospheric pressure is called :
- A.
Boiling point
- B.
Melting point
- C.
Freezing point
- D.
All of the above
Correct Answer
B. Melting pointExplanation
The temperature at which solids melt into liquids is called the melting point. This is the specific temperature at which the solid undergoes a phase change and transitions into a liquid state. It is an important characteristic property of substances and can vary depending on the substance. The boiling point refers to the temperature at which a liquid changes into a gas, while the freezing point is the temperature at which a liquid changes into a solid. Therefore, the correct answer is "Melting point".Rate this question:
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- 9.
The amount of heat required to change 1kg of solid to liquid state at melting point temperature is called:
- A.
Latent heat of fusion
- B.
Latent heat of vapourisation
- C.
Sensible heat of melting
- D.
Sensible heat
Correct Answer
A. Latent heat of fusionExplanation
The correct answer is "Latent heat of fusion". This term refers to the amount of heat energy required to change a substance from a solid state to a liquid state at its melting point temperature, without changing its temperature. It is called "latent" because this heat is hidden or absorbed by the substance during the phase change, and does not result in a change in temperature.Rate this question:
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- 10.
Which of the following substance show sublimation:
- A.
Camphor
- B.
Ammonium Chloride
- C.
Nepthalene balls
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
All of the substances mentioned in the question - camphor, ammonium chloride, and naphthalene balls - exhibit sublimation. Sublimation is the process in which a solid directly changes into a gas without going through the liquid phase. In the case of these substances, they can undergo sublimation when heated, transitioning from a solid to a gas without melting into a liquid first. Therefore, all three substances mentioned demonstrate sublimation.Rate this question:
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- 11.
Which of the following statement is not true?
- A.
Evaporation depends on exposed surface area
- B.
Evaporation depends on temperature
- C.
Evaporation depends on humidity
- D.
Evaporation doesn't depend on wind
Correct Answer
D. Evaporation doesn't depend on windExplanation
Evaporation is the process by which a liquid changes into a gas. The rate of evaporation is influenced by various factors. The given answer states that evaporation does not depend on wind. This is not true because wind plays a significant role in the process of evaporation. Wind helps in removing the water vapor molecules from the surface, increasing the rate of evaporation. Therefore, the statement that evaporation doesn't depend on wind is incorrect.Rate this question:
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- 12.
Which of the following statement is true?
- A.
Evaporation is not a surface phenomenon
- B.
Evaporation and boiling is same
- C.
Evaporation always causes cooling
- D.
Evaporation doesn't depend on humidity
Correct Answer
C. Evaporation always causes coolingExplanation
Evaporation always causes cooling because when a liquid evaporates, the molecules with the highest kinetic energy escape from the surface, leaving behind the molecules with lower kinetic energy. This results in a decrease in the average kinetic energy of the remaining molecules, causing a cooling effect.Rate this question:
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- 13.
Lightning is a type of:
- A.
Liquid state of matter
- B.
Plasma state of matter
- C.
Bose Einstein condensate
- D.
Gas state of matter
Correct Answer
B. Plasma state of matterExplanation
Lightning is a type of plasma state of matter. Plasma is a highly ionized gas where the atoms have been stripped of their electrons. Lightning occurs when there is a large build-up of electrical charge in the atmosphere, causing a discharge of electricity through the air. This discharge creates a plasma channel, which is visible as a bolt of lightning. Plasma is often referred to as the fourth state of matter, distinct from solid, liquid, and gas, due to its unique properties such as conductivity and the ability to generate electromagnetic fields.Rate this question:
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- 14.
Absolute temperature means:
- A.
0 degree celcius
- B.
0 Kelvin
- C.
-273.15 degree celcius
- D.
Both option 2 and 3
Correct Answer
D. Both option 2 and 3Explanation
Absolute temperature refers to the temperature measured on the Kelvin scale, which starts at absolute zero. Absolute zero is the point at which all molecular motion ceases, and it is equivalent to 0 Kelvin or -273.15 degrees Celsius. Therefore, both option 2 (0 Kelvin) and option 3 (-273.15 degrees Celsius) represent absolute temperature.Rate this question:
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- 15.
Convert 470 K in degree celcius?
- A.
197 degree celcius
- B.
297 degree celcius
- C.
97 degree celcius
- D.
Data insufficient
Correct Answer
A. 197 degree celcius -
- 16.
Convert -71 degree celcius into Kelvin?
- A.
102 K
- B.
344 K
- C.
-202 K
- D.
202 K
Correct Answer
D. 202 KExplanation
To convert Celsius to Kelvin, you need to add 273.15 to the Celsius temperature. In this case, when you add 273.15 to -71 degrees Celsius, you get 202.15 Kelvin. However, since Kelvin is only measured to two decimal places, the answer is rounded down to 202 K.Rate this question:
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- 17.
What is one of the primary benefits of wearing cotton clothing?
- A.
It is highly flammable
- B.
It retains odors
- C.
It is breathable and absorbs moisture
- D.
It is waterproof
Correct Answer
C. It is breathable and absorbs moistureExplanation
Cotton clothing is well-known for being breathable and for its ability to absorb moisture, making it comfortable to wear in various weather conditions. This property helps keep the wearer cool in hot weather and warm when it's cold.Rate this question:
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Jul 21, 2024Quiz Edited by
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