1.

Assertion (A): Physical adsorption occurs at low temperature. Reason (R) : In physical adsorption, weak Van der Waals force of attraction exist. Other weak forces exist in physical adsorption are dipole-dipole interaction and dispersion forces. As these forces are weak, heat of adsorption is low.

Answer»

Both A and R are CORRECT but R is not correct EXPLANATION of A.
Both A and R are correct and R is the correct explanation of A.
Both A and R are wrong.
A is correct but R is wrong.

Answer :B


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