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This question belongs to General Knowledge General Science

General Science

?

Permanent hardness of water can be removed by adding:

A) Chlorine B) Washing Soda C) Potassium Permanganate D) Bleaching Powder

Answer & Solution

Correct Answer: Option B

Temporary hardness is due to presence of soluble bicarbonates of calcium and magnesium and permanent hardness is due to the presence of chlorides and sulphate of calcium and magnesium.

Question posted by Examveda

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