Question

A small drop of mercury is spherical but bigger drops are oval in shape. surface tension of liquid decreases with increase in temperature.

• A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
• B. If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
• C. If Assertion is true but Reason is false
• D. If both Assertion and Reason are false

Answer 1

Answer: (B)

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion

Answer 2

In a small drop, the force due to surface tension is very large as compared to its weight and hence it is spherical in shape. A big drop becomes oval in shape due to its large weight. The surface tension of liquid decreases with increase of temperature.