Tag: constituents of air

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Questions Related to constituents of air

Multiple choice chemistry water and air and their importance natural cycles and resources constituents of air component of air - nitrogen

Plants consumes ____________ and gives _____________.

  1. oxygen, carbon dioxide

  2. carbon dioxide, oxygen

  3. sulphur dioxide, oxygen

  4. oxygen, sulphur dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants consumes carbon dioxide and gives oxygen.

As in the process of photosynthesis plants consumes carbon dioxide and during photosynthesis plants release oxygen.

Multiple choice chemistry water and air and their importance natural cycles and resources constituents of air component of air - nitrogen

How is the percentage of oxygen in an atmosphere maintained?

  1. consumption of carbon dioxide by plants

  2. consumption of oxygen by living beings

  3. consumption of oxygen by plants

  4. consumption of carbon dioxide by animals
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

The percentage of oxygen in an atmosphere is maintained by consumption of carbon dioxide by plants and consumption of oxygen by living beings.


Hence the options A and B are correct.

Multiple choice chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

Snow and ice, are present as ________ at the poles of the earth, snow-covered mountains, and glaciers.

  1. liquid form

  2. the solid form

  3. the gaseous form

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas (water vapour) in the atmosphere.


Hence, option B is correct.

Multiple choice chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

Which of the following is potable water?

  1. A glass of water fit for drinking

  2. Water in a pot

  3. Sea water

  4. Water with bacteria and chemicals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A glass of water is fit for drinking. Water in a pot may contain impurities like dust, sand, etc. Sea contains huge number of impurities including huge levels of salts and water with bacteria and chemicals and is not preferred for drinking.