1.

Regarding air, which of the following statement(s) is / are true (i) Air has no mass (ii) Air is needed for burning (iii) Air exerts pressure from all sides and on everything

A.  (i) and (ii)
B.  (i) and (iii)  
C.  Whether evaporation depends on the material of the container
D.  (i), (ii) and (iii)
Answer» D.  (i), (ii) and (iii)


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