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

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

(p)Photosynthesis	(u) Produce oxygen
(q)Respiration	(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

Answers:
1. (c)
2. (d)
3. (d)
4. (d)
5. (c)
6. (a)
7. (d)
8. (a)
9. (c)
10.(a)

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