Question

a solution reacts with crushed egg shells to give a gas that turns lime water to milky . the solution contains a. Nacl b. HCL c. Licl d. KCl​

Answer 1

the solution contains an acid HCl .....because crushed shell ( CaCo3) is a base

and here option a, c, d are also base

hope u understood ........

Answer 2

(b) $\huge\mathrm\purple{HCl}$

Egg shells contains calcium carbonate, which on reaction with HCl liberates CO2 gas which turn lime water to milky.

$\small\tt\red{CaCO3 + 2HCl → CaCl2 + H2O + CO2}$