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Question 1 of 5

Medal-premium 1

When we breathe in air, our body utilises the following gases:

Select one of the following:

  • Nitrogen, oxygen and carbon dioxide.

  • Nitrogen and oxygen only.

  • Oxygen only.

Question 2 of 5

Medal-premium 1

Plants only give out oxygen to the environment. It does not take in oxygen.

Select one of the following:

  • True

  • False

Question 3 of 5

Medal-premium 1

What is the percentage of oxygen in the air?

Select one of the following:

  • 1%

  • 21%

  • 78%

Question 4 of 5

Medal-premium 1

Why is it an advantage to have water vapour present in the air?

Select one of the following:

  • The water vapour makes the air moist and not too dry for us to breathe in.

  • The water vapour breathed in will enter the digestive system to prevent thirst.

  • The water vapour will be used for respiration in the body to produce energy.

Question 5 of 5

Medal-premium 1

Which statement is true?

Select one of the following:

  • Oxygen is the only useful gas in the air for living things.

  • Nitrogen is the most abundant gas in the air but is useless to living things.

  • Carbon dioxide exists in a small percentage in the air but is useful for living things.

Quiz by , created almost 3 years ago

Quiz on Air, created by ildasolha.jamari on 26/08/2014.

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Created by ildasolha.jamari almost 3 years ago