Question

Under which of the following conditions we can boil water at the room temperature?

• A. By adding any salt.
• B. By increasing the pressure.
• C. By lowering the pressure.
• D. By adding any liquid.

Answer 1

The correct option is C

By lowering the pressure.

The boiling point of a liquid depends on factors like atmospheric pressure, nature of liquid and presence of impurities. As atmospheric pressure decreases, the boiling point also decreases and vice versa. Water boils at ${100}^{\circ }C$ at 1 atm pressure. So, by lowering the pressure, we can boil the water at the room temperature.