1.

Assertion. Colloidal solutions are stable but colloidal particles do not settle down. Reason. Brownian momement counters the force of gravity actively on colloidal particles.

Answer»

If both ASSERTION and reason are ture, and reason is the trure EXPLANATION of the assertion.
If both assertion and reason are TRUE, but reason is not the true explanation of the assertion.
If assertion is true, but reason is false.
If both assertion and reason false.

SOLUTION :R is the correct explanation of A.


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