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Permanent hardness of water is due to th...

Permanent hardness of water is due to the presence of :

A

blcarbonates of sodium and potassium

B

chlorides and sulphates of sodium and potassium

C

chlorides and sulphates of calcium and magnesium

D

bicarbonates of calcium and magnesium

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The correct Answer is:
C
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Assertion (A) : Temporary hardness in water is due to the presence of chlorides of magnesium. Reason (R) :Temporary hardness is removed by Clark's method.

NTA MOCK TESTS-NTA TPC JEE MAIN TEST 37-CHEMISTRY
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