Click the correct answer (True or False).
Click the correct answer.
Which component of air is used by green plants to make their food?
Oxygen
Carbon dioxide
None of these
Nitrogen
Which component of air does not cause burning but controls burning?
Nitrogen
Oxygen
Water vapour
Carbon dioxide
Which of the following is/are use(s) of air?
Air helps birds to fly
Moving air, i.e., wind is used to generate electricity
Air filters some harmful radiations
All of these
Which component of air causes burning?
Nitrogen
Oxygen
Water vapour
Carbon dioxide
Click the correct answer.
supports combustion.
Oxygen
Nitrogen
Carbon dioxide
Water vapour
present in air are harmful.
Dust particles, smoke
Water vapour, smoke
Nitrogen and dust particles
Argon and nitrogen
Air is not one substance but a mixture of
gases.
4
5
less than five
more than five
As you go higher, the atmosphere
.
gets thicker
gets thinner
remains the same
cannot be predicted
The component of air used by green plants to make their food is
.
carbon dioxide
oxygen
nitrogen
water vapour
