Practice Important Questions for Class 6 Chapter 15 Science Air Around Us

In this page we have Practice Important Questions for Class 6 Chapter 15 Science Air Around Us . Hope you like them and do not forget to like , social share and comment at the end of the page.
Question 1
The components of air which is taken by Plants to prepare the food?
(a) O2
(b) N2
(c) CO2
(d) None of these

Question 2
Which of the following is NOT present in air?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Iron

Question 3
Which gas is produced by plants during photosynthesis?
(a) Nitrogen
(b) Carbon Dioxide
(c) Hydrogen
(d) Oxygen

Question 4
What are the users of Oxygen?
(a) Living being
(b) Combustion of fuel
(c) Rusting of iron
(d) All the above

Question 5
The % of Nitrogen in Air is?
(a) 20
(b) 70
(c) 79
(d) 1

Question 6
The presence of water vapor is Air is important for
(a) Water Cycle
(b) Ozone layer
(c) Combustion
(d) None of the above

Question 7
What is not true of Air?
(a) It is odorless and colorless
(b) It occupier space and has weight
(c) it can be compressed and stored
(d) None of these

Question 8
The % of Oxygen in Air is?
(a) 20
(b) 70
(c) 79
(d) 1

Question 9
Statement A: Nitrogen is used in protein synthesis
Statement B: Proteins are required by living organisms to grown and repair their body parts
(a) Statement A is correct only
(b) Statement B is correct only
(c) Both the statement is correct
(d) Both the statement are incorrect

Question 10
(u) Produce oxygen
(v) Absorb oxygen
(w) Produce CO2
(x) absorb CO2
(a) P -> V, X Q -> V, W
(b) P -> V, W Q -> V, X
(c) P -> V, W Q -> V, X
(d) None of these

Question 11
How do plants and animals help each other in exchange of gases in the atmosphere?

Question 12
When is air said to be polluted?

Question 13
What happens when air comes in contact with cool surface?

Question 14
Why a person caught in fire is covered with woolen blanket?

Question 15
Why we feel suffocated in a closed room when something is burning in it?

Question 16
Ravi was playing with some cotton. He dropped some lump of cotton in water. Why does a lump of cotton wool shrink in water?

Question 17
Does the density of the blanket of air that surrounds us get thicker or thinner as we go up?

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