Q.7 In places of hot climate it is advised that the outer walls of houses be painted white. Explain.

1. In places of hot climate, it is advised to paint the outer walls of houses white because
a light color such as white reflects back most of the heat that falls on it.

2. White is a poor absorber of heat and a very less amount of heat is absorbed by the walls.
It keeps the inside cool even if there is a hot climate outside the house.

3. Therefore, a light color tends to keep the house cool.