A) NaCl
B) HCl
C) LiCI
D) KCl
Correct Answer: B
Solution :
The egg-shells are made up of calcium carbonate. When it reacts with HCl it liberates \[C{{O}_{2}}\] gas which turns lime water milky\[CaC{{O}_{3}}+2HCl\to CaC{{l}_{2}}+{{H}_{2}}O+C{{O}_{2}}\]
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