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In the neighbourhood of your school, har...

In the neighbourhood of your school, hard water required for an experiment is not avialable. Select from the following groups of salts available in your school, a group each member of which, if dissolved in distilled water, will make it hard

A

Sodium chloride, calcium chloride

B

Potassium chlorde, sodium chloride

C

Sodium chlorde, magnesium chloride

D

calcium chloride, magnesium chloride.

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MODERN PUBLICATION-CARBON AND ITS COMPOUNDS-EXERCISE
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