1(viii)
In the laboratory preparation, HCl gas is dried by passing through:
- (a)dilute nitric acid
- (b)concentrated sulphuric acid
- (c)dilute sulphuric acid
- (d)acidified water
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concentrated sulphuric acid
Reason — Concentrated Sulphuric acid only removes the moisture content of HCl gas but does not react with it. Hence, it is used as a drying agent for HCl gas.