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

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NaCl

HCl

LiCl

KCl

answer is B.

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Detailed Solution

concept - Lime water is actually a calcium hydroxide solution(

Ca(OH) 2

) and it turns milky on passing carbon dioxide.
Egg-shell is composed of calcium carbonate (

CaCO 3

), and these egg-shells react with hydrochloric acid (

HCl

) to produce calcium chloride (

CaCl 2

), water and carbon dioxide (

CO 2

). The produced carbon dioxide on passing through lime water (

Ca(OH) 2

) turns the solution milky by forming calcium carbonate. The reaction is shown as

Therefore, the solution that reacts with crushed eggshells to give a solution that turns lime-water milky is hydrochloric acid (

HCl

)
Hence, the correct answer is 2.

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