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Assignment for Air Around Us 2 Questions and Answers Paper
Question 1
The components of air which is taken by plants to prepare the food?
(a)
(b)
(c)
(d) None of these
Answer: (c)
Question 2
Which of the following is NOT present in air?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Iron
Answer: (d)
Question 3
Which gas is produced by plants during photosynthesis?
(a) Nitrogen
(b) Carbon dioxide
(c) Hydrogen
(d) Oxygen
Answer: (d)
Question 4
What are the users of Oxygen?
(a) Living being
(b) Combustion of fuel
(c) Rusting of iron
(d) All the above
Answer: (d)
Question 5
The % of Nitrogen in Air is?
(A) 20
(B) 70
(C) 79
(D) 1
Answer: (c)
Question 6
The presence of water vapour in Air is important for
(a) Water Cycle
(b) Ozone layer
(c) Combustion
(d) None of these
Answer: (a)
Question 7
What is not true of Air?
(A) It is odourless and colourless
(B) It occupies space and has weight
(C) It can be compressed and stored
(D) None of these
Answer: (d)
Question 8
The % of Oxygen in Air is?
(A) 20
(B) 70
(C) 79
(D) 1
Answer: (a)
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
Answer: (c)
Question 10
(p) Photosynthesis | (u) Produce oxygen |
(q) Respiration | (v) Absorb oxygen |
(w) Produce coz | |
(x) absorb co2 |
(a)
(b)
(c)
(d) None of these
Answer: (a)