Question

Liquids have only _________free surface.

Answer 1

1. Liquid: It is a state of matter which has definite volume but indefinite shape.
2. Free surface:

• The surface which is in contact with the air is known as the free surface of the liquid.
• Example:

i. Water in glass contains one free surface which is horizontal and in direct contact with air.

ii. Surface of the ocean where a boat floats on the free surface of the ocean.

Thus, liquids have only one free surface.