A solution reacts with zinc granules to give a gas which burns with a 'pop' sound. The solution contains:

Which gas burns with pop sound ?

A solution reacts with marble chips to produce a gas which turns lime water milky. The solution contains:

A solution reacts with crushed egg-shells to give a gas that turns lime water milky the solution contains:

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

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