Question

Assertion : The angle of contact of a lilquid with a solid decreases with increase in temperature.
Reason : With increase in temperature, the surface tension of the liquid increases.
A. both Assertion and Reason are true and the Reason in the correct explanation of the Assertion.
B. both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. both Assertion and Reason are false.

Answer 1

Correct Answer - D
Here both, assertion and reason are false. Angle of contact increases with increase in temperature. Surface tension decreases on increasing temperature.