| (i) Air is a mixture of several gases. |
| (ii) Air exerts pressure. |
| (iii) The composition of air is constant in all places. |
A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i) and (iii)
D) (i), (ii) and (iii)
Correct Answer: A
Solution :
Air is a mixture of several types of gases. It can exert pressure. The composition of air is not constant in all places.
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