Q.

Statement-I: Temporary hardness of water is due to the presence of bicarbonates of Ca2+ / Mg2+.Statement-II: Permanent hardness of water is due to the presence of chlorides/sulphates of Ca2+ / Mg2+.

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a

Both statement-I and statement-II are correct

b

Statement-I is correct and statement-II is incorrect

c

Statement-I is incorrect and statement-II is correct

d

Both statement-I and statement-II are incorrect

answer is A.

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Detailed Solution

Temporary hardness of water is due to the presence of bicarbonates of Ca+2, Mg+2, where as permanent hardness of water is due to the presence of chlorides or sulphates of Ca+2, Mg+2
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