Question

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains ______.

Options

• NaCl

• HCl

• LiCl

• KCl

Answer 1

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains HCl.

Explanation:

Egg-shells contain calcium carbonate. Calcium carbonate reacts with HCl to give out CO₂ gas, which turns lime water milky.