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>> $Permanent hardness in water is due to th$

Question

Permanent hardness in water is due to the presence of:

A

$C a^{2 +}, M g^{2 +}$

B

$C a C l_{2}, M g C l_{2}$

C

$C a C O_{3}, M g C O_{3}$

D

all of the above

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Solution

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Correct option is B)

Correct Answer: Option B

Explanation:
The permanent hardness of water is due to sulfates and chlorides of Magnesium ( $M g$ ) and Calcium ( $C a$ ). The bicarbonates of Magnesium ( $M g$ ) and Calcium ( $C a$ ) cause temporary hardness.

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