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Which of the following is NOT true regarding the properties of air?
- a)Air occupies space
- b)Air exerts pressure
- c)Air has no mass
- d)Air cannot be seen
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following is NOT true regarding the properties of air?a)A...
Air is a matter. It has mass.
This question is part of UPSC exam. View all Class 4 courses
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Which of the following is NOT true regarding the properties of air?a)A...
Explanation:
Air is a mixture of gases that makes up the Earth's atmosphere. It is composed of various gases such as nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. Let's examine each option to determine which one is NOT true regarding the properties of air.
a) Air occupies space: This statement is true. Air is a matter and therefore occupies space. It fills the volume of any container it is placed in. For example, when you blow up a balloon, you are filling it with air.
b) Air exerts pressure: This statement is true. Air exerts pressure on objects. This pressure is caused by the constant motion of air molecules colliding with the surface of objects. Atmospheric pressure is the force per unit area exerted on a surface by the weight of the air above it. It decreases with increasing altitude.
c) Air has no mass: This statement is NOT true. Air does have mass. Even though air is not visible, it is composed of particles called molecules, which have mass. The mass of air can be measured and it is often expressed in terms of the density of air.
d) Air cannot be seen: This statement is true. Air is transparent, which means that it cannot be seen with the naked eye. However, we can observe the effects of air, such as the movement of leaves in the wind or the formation of clouds in the sky.
Therefore, the correct answer is option 'C' - Air has no mass. This statement is not true as air does have mass due to the presence of molecules.
Air is a mixture of gases that makes up the Earth's atmosphere. It is composed of various gases such as nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. Let's examine each option to determine which one is NOT true regarding the properties of air.
a) Air occupies space: This statement is true. Air is a matter and therefore occupies space. It fills the volume of any container it is placed in. For example, when you blow up a balloon, you are filling it with air.
b) Air exerts pressure: This statement is true. Air exerts pressure on objects. This pressure is caused by the constant motion of air molecules colliding with the surface of objects. Atmospheric pressure is the force per unit area exerted on a surface by the weight of the air above it. It decreases with increasing altitude.
c) Air has no mass: This statement is NOT true. Air does have mass. Even though air is not visible, it is composed of particles called molecules, which have mass. The mass of air can be measured and it is often expressed in terms of the density of air.
d) Air cannot be seen: This statement is true. Air is transparent, which means that it cannot be seen with the naked eye. However, we can observe the effects of air, such as the movement of leaves in the wind or the formation of clouds in the sky.
Therefore, the correct answer is option 'C' - Air has no mass. This statement is not true as air does have mass due to the presence of molecules.
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Which of the following is NOT true regarding the properties of air?a)Air occupies spaceb)Air exerts pressurec)Air has no massd)Air cannot be seenCorrect answer is option 'C'. Can you explain this answer?
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