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Chemistry
The salt responsible for permanent hardness of H2O is
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Q. The salt responsible for permanent hardness of $H_2O$ is
Bihar CECE
Bihar CECE 2009
Hydrogen
A
$Na_{2}SO_{4}$
B
$MgHCO_{3}$
C
$NaCl$
D
$MgCl_{2}$
Solution:
Chlorides and sulphates of calcium and magnesium are responsible for permanent hardness of water.