Question

In order to prepare dry hydrogen chloride gas in a humid atmosphere, the gas produced is passed through a guard tube (drying tube) which contains ______.

विकल्प

• Calcium chloride

• Calcium oxide

• Calcium hydroxide

• Calcium carbonate

Answer 1

In order to prepare dry hydrogen chloride gas in a humid atmosphere, the gas produced is passed through a guard tube (drying tube) which contains calcium chloride.

Explanation:

A drying tube filled with calcium chloride (CaCl₂) is used to prepare dry hydrogen chloride gas because it is a strong drying agent that absorbs moisture without interacting with HCl.