Question

Which one of the following is a correct statement?
1. Ice provides more cooling effect than water at $273K$.
2. Evaporation of a liquid causes cooling.
3. Increase of pressure lowers the separation between the particles of matter.

• A. $1$ and $2$
• B. $1$ and $3$
• C. $2$ and $3$
• D. $1,2$ and $3$

Answer 1

The correct option is D $1,2$ and $3$

Ice provides more cooling effect than water at 273 K because of latent heat of fusion. Evaporation of a liquid causes cooling as the surface molecules take away heat to escape out. Increase of pressure lowers the separation between the particles of matter and brings them closer leading to change of state from gas to liquid and to solid.