Questions
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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Correct option is A
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+2Similar Questions
The molecular formula of a commercial resin used for exchanging ion in water softening is C8H7SO3 Na (mol. wt. = 206). What would be the minimum uptake of Ca2+ ions by the resin when expressed in mole per gram resin ?
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