1.

Assertion : Coagulation power of Al^(3+)is more than Na^(+) . Reason : greater the valency of the flocculating ion added, greater is its power to cause precipitation

Answer»

if both assertion and reason are TRUE and reason is the CORRECT EXPLANATION of assertion. (Hardy-Sechulze rule)
if both assertion and reason are true but reason is not the correct explanation of assertion.
assertion is true but reason is false
both assertion and reason are false.

Answer :A


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