Question

A glass rod dipped in concentrated hydrochloric acid can be used to detect ______.

विकल्प

• sulphur dioxide gas

• carbon dioxide gas

• ammonia gas

• nitrogen dioxide gas

Answer 1

A glass rod dipped in concentrated hydrochloric acid can be used to detect ammonia gas.

Explanation:

Ammonia gas reacts with hydrogen chloride vapors from the glass rod to form dense white fumes of ammonium chloride (NH₄Cl).