A solution reacts with crushed egg-shells to give a gas that turns lime water milky. The solution contains: (a) NaCl (b) HCl (c) LiCl (d) KCl
The correct option is B HCl Explanation for the correct answer:- Option (B) HCl The egg shell is made up of Calcium carbonate(CaCO3). Therefore, when it reacts with Hydrochloric acid, it forms Calcium chloride, water, and Carbon dioxide. The gas involved here is Carbon dioxide. This Carbon dioxide when reacted with Calcium hydroxide(CaOH2)which is also called lime water, forms a milky solution of Calcium carbonate. This Calcium carbonate formed here is a white ppt, and along with it, water is also formed as a by-product.
