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Chemistry
HCl was passed through a solution of CaCl2,MgCl2 and NaCl. Which of the following compound(s) crystallise(a)?
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Q. HCl was passed through a solution of $CaCl_2$,$MgCl_2$ and $NaCl$. Which of the following compound(s) crystallise(a)?
NEET
NEET 2020
The s-Block Elements
A
Both $MgCl_2$ and $CaCl_2$
33%
B
Only $NaCl$
39%
C
Only $MgCl_2$
6%
D
$NaCl$, $MgCl_2$ and $CaCl_2$
22%
Solution:
On passing $HCl$ through aqueous solution of $CaCl_2, MgCl_2$ and $NaCl$, crystals of pure $NaCl$ seperate out. Calcium and magnesium chloride being more soluble than $NaCl$, remain in solution.