Question

A closed bottle containing water at ${30}^{\circ }C$ is open on the surface of the moon. Then.

• A. The water will boil
• B. The water will come out as a spherical ball
• C. The water will freeze
• D. The water decompose into hydrogen and oxygen

Answer 1

The correct option is A The water will boil

As the air pressure decreases, the temperature required to boil a liquid also decreases i.e., boiling point of water is decreasing with decrease in pressure.

As the atmospheric pressure is zero at moon, so due to decrease in boiling point, water will start to boil, so answer is (A).