Test Your Scientific Knowledge
Science fanatics who have vast knowledge on the matter try out this quiz. It will gauge and test how much scientific knowledge you really have. It is a good scientific treat.
- 1.
Iron can be found in the solid as well as the liquid state.A single iron atom in the solid state is _______________that in the liquid state.
- A.
Smaller than
- B.
Heavier than
- C.
Bigger than
- D.
The same as
Correct Answer
D. The same asExplanation
In the solid state, the iron atoms are closely packed together and have a regular arrangement, which makes them more dense. In the liquid state, the iron atoms have more freedom of movement and are less closely packed, resulting in a slightly lower density. Therefore, a single iron atom in the solid state is the same size as a single iron atom in the liquid state.Rate this question:
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- 2.
Cells that conduct messages are known as.....
- A.
Skin cells
- B.
Nerve cells
- C.
Blood cells
- D.
Kidney cells
Correct Answer
B. Nerve cellsExplanation
Nerve cells are responsible for conducting messages throughout the body. They are specialized cells that make up the nervous system and play a crucial role in transmitting electrical signals, enabling communication between different parts of the body. Unlike skin cells, blood cells, or kidney cells, nerve cells have unique structures and functions that allow them to carry out this important task.Rate this question:
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- 3.
Three gases found in the Earth's atmosphere are carbon dioxide,nitrogen and oxygen.What is their order of abundance from greatest to least????
- A.
Nitrogen,Oxygen,Carbon Dioxide
- B.
Nitrogen,Carbon Dioxide,Oxygen
- C.
Oxygen,Nitrogen,Carbon Dioxide
- D.
Carbon Dioxide,Oxygen,Nitrogen
Correct Answer
A. Nitrogen,Oxygen,Carbon DioxideExplanation
The correct answer is Nitrogen, Oxygen, Carbon Dioxide. This is because nitrogen makes up about 78% of the Earth's atmosphere, while oxygen makes up about 21%. Carbon dioxide, on the other hand, is present in much smaller quantities, making up less than 1% of the atmosphere. Therefore, nitrogen is the most abundant gas, followed by oxygen, and then carbon dioxide.Rate this question:
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- 4.
Which characteristic is found only in mammals???
- A.
Eyes that detect colour
- B.
Glands that make milk
- C.
Skin that absorbs oxygen
- D.
Bodies that are protected by scales
Correct Answer
B. Glands that make milkExplanation
Mammals are the only animals that possess glands that produce milk. This is a distinguishing characteristic that sets them apart from other animals. While some mammals, like humans, have highly developed mammary glands for breastfeeding their young, even the most primitive mammals have some form of milk-producing glands to nourish their offspring. This unique ability to produce milk is a defining feature of the mammalian class.Rate this question:
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- 5.
What is the primary function of the large leaves found in the seedlings growing in the forest???
- A.
To provide shade for root systems
- B.
To get rid of excess water that is entering through the roots
- C.
To allow for leaf damage by insects
- D.
To gather as much light as possible for photosynthesis
Correct Answer
D. To gather as much light as possible for pHotosynthesisExplanation
The large leaves found in seedlings growing in the forest have the primary function of gathering as much light as possible for photosynthesis. Photosynthesis is the process by which plants convert sunlight into energy, and leaves play a crucial role in this process by capturing sunlight and using it to produce food for the plant. The larger the leaves, the more surface area they have to absorb sunlight, maximizing the plant's ability to photosynthesize and grow.Rate this question:
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- 6.
Some white blood cells destroy harmful bacteria within the human body by engulfing them and digesting them,in the same way that amoeba engulf their food.Which of the following characteristics of some white blood cells allows them to do this???
- A.
The ability to divide
- B.
The presence of a nucleus
- C.
The ability to change shape
- D.
The absence of any haemoglobin
Correct Answer
C. The ability to change shapeExplanation
Some white blood cells are able to change shape, which allows them to engulf and digest harmful bacteria within the human body. This ability is similar to how amoeba engulf their food. By changing shape, white blood cells can surround and engulf bacteria, forming a protective barrier around them. Once engulfed, the white blood cells can then digest and destroy the bacteria. The presence of a nucleus, the ability to divide, and the absence of any haemoglobin are not directly related to the process of engulfing and digesting bacteria.Rate this question:
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- 7.
If we consider the constituent atoms of the moon and the earth,we will find that....
- A.
The moon and the earth are made up of the same basic elements
- B.
The moon and the earth are made up of the same single element
- C.
The moon is made up of elements that are totally different from those of the earth.
- D.
The moon and the earth are each made up of a single element,but they are different.
Correct Answer
A. The moon and the earth are made up of the same basic elementsExplanation
The correct answer is that the moon and the earth are made up of the same basic elements. This means that both the moon and the earth contain similar types of atoms and chemical elements in their composition. This is supported by scientific evidence and studies that have analyzed the composition of both celestial bodies.Rate this question:
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- 8.
Shown here is the life cycle of the common frog. If we compare the adult frog to the tadpole,we would see that there are no visible similarities between them.A complete change in physical appearance happens through various stages from tadpole to adult. Given below are the stages of development in various organisms.Whose development is similar to that of the frog???
- A.
Egg>>>Chick>>>Hen>>>Egg
- B.
Egg>>fry>>Adult fish>>Egg
- C.
Egg>>duckling>>Duck>>Egg
- D.
Egg>>caterpilar>>pupa>>butterfly>>Egg
Correct Answer
D. Egg>>caterpilar>>pupa>>butterfly>>EggExplanation
The correct answer is "Egg>>caterpillar>>pupa>>butterfly>>Egg". This is because, similar to the life cycle of a frog, the development of a butterfly also involves a complete change in physical appearance through different stages. The process starts with an egg, then goes through the caterpillar stage, followed by the pupa stage, and finally, the adult stage as a butterfly. The cycle then starts again with the laying of eggs.Rate this question:
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- 9.
Antibiotics are drugs used against bacterial infections.One of the most common side effects of antibiotics is diarrhoea.Scientists wanted to find out if eating yogurt can lessen the side effects of the medication.For this they gave yogurt to a group of people on antibiotics,who were known to suffer the side effects of antibiotics and recorded the observations.In order to reach a conclusion for the study,which of the following needs to be measured???
- A.
The frequency and duration of fever
- B.
The incidence and severity of diarrhoea
- C.
The water loss caused due to diarrhoea
- D.
The count of pathogenic bacteria in the blood
Correct Answer
B. The incidence and severity of diarrhoeaExplanation
The study aims to determine if eating yogurt can lessen the side effects of antibiotics, specifically diarrhoea. Therefore, the most relevant factor to measure would be the incidence and severity of diarrhoea. This would provide information on whether or not yogurt consumption has an impact on reducing the side effects of antibiotics in terms of diarrhoea. Measuring the frequency and duration of fever, the water loss caused due to diarrhoea, or the count of pathogenic bacteria in the blood would not directly provide information on the effectiveness of yogurt in reducing antibiotic side effects.Rate this question:
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Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Dec 19, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 07, 2010Quiz Created by
Lupintiku
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