Question

A drop each of two non-corrosive and non-irritating liquids A and B at a temperature of ${22}^{\circ }C$ are placed on the skin. Liquid A gives a more cooling sensation than liquid B. Which of the following can be said about the liquids A and B?

• A. Liquid A has higher boiling point than that of liquid B.
• B. Liquid A has higher latent heat of vaporisation than that of liquid B
• C. Liquid A has lower latent heat of vaporisation than that of liquid B
• D. The boiling points of liquid A and B are equal.

Answer 1

The correct option is C

Liquid A has lower latent heat of vaporisation than that of liquid B

If liquid A gives more cooling effect then latent heat of vaporisation of liquid A is low.