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

N a C l

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H C l

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L i C l

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K C l

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Solution

The correct option is B $H C l$
Crushed egg shell has composition $C a C O_{3}$ reacts with acid and gives gas $C O_{2}$ which turns lime water $(C a (O H)_{2})$ milky by producing $C a C O_{3}$ again. The acid in given options is $H C l$ .
$C a C O_{3} + 2 H C l \to C a C l_{2} + C O_{2} + H_{2} O$
$C a (O H)_{2} + C O_{2} \to C a C O_{3} + H_{2} O$

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

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A solution of _______ when reacts with crushed egg-shells, gives a gas that turns lime-water milky.

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