Question

Assertion (A) The viscosity increases with the temperature
Reason (R) The increase in temperature increases the internal energy, of the molecules

• A. Both A and R are correct and R is the reason of A
• B. Both A and R are correct, but R is not the reason of A
• C. A is correct, but R is incorrect
• D. A is incorrect, but R is correct

Answer 1

The correct option is D A is incorrect, but R is correct

The Viscosity of liquid decreases with increase in temperature as it weakens the internal inter-molecular forces. So assertion is incorrect.

But it increases the internal energy of the molecules. So Reason is correct.