A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains: NaCl, HCl, LiCl, KCl<p></p>

The correct option is HCl.
Crushed egg shell has composition CaCO3. It reacts with acid and gives gas CO2 which turns lime water (Ca(OH)2) milky by producing CaCO3 again.
The acid in given options is HCl.
CaCO3 + 2HCl → CaCl2 + CO2 + H2O
Ca(OH)2 + CO2 → CaCO3 + H2O

Eduprobe

Question:

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

Solution: