Question

Statement--1: Liquid pressure is only exerted on solid surfaces in contact and is exerted in between the layers of liquid. Statement--2: Surface tension arises due to difference in potential energy of molecules in the bulk of liquid and at the surface.

• A. Both Statement--1 and Statement--2 are incorrect.
• B. Statement--1 is correct but Statement--2 is incorrect.
• C. Statement--1 is incorrect but Statement--2 is correct.
• D. Both Statement--1 and Statement--2 are correct.

Hint:

Key ideas to remember:
Liquid pressure exists both at boundaries and within the liquid
Surface tension is an energy phenomenon related to molecular arrangement

Answer 1

The Correct Option is D

The statements provided are both correct:

Statement-1: Liquid pressure is exerted on solid surfaces in contact with the liquid and also within the liquid itself. This pressure is exerted in all directions in the liquid and is particularly noticeable on the solid-liquid interface.

Statement-2: Surface tension arises because of the difference in potential energy between molecules in the bulk of the liquid and those at the surface. Molecules at the surface experience a net inward force, causing the liquid to minimize its surface area, which results in surface tension.

Thus, both Statement-1 and Statement-2 are correct.