Question

30. In place of hot climate it is advised that the outer walls of house be
painted white Explain​

Answer 1

Answer:

In places of hot climate it is advised that the outer wall of houses be painted white because white color reflects heat and the houses do not heat up too much.

Answer 2

Answer:

The white colour reflects most of the heat that falls on it. When the outer walls of the houses in the places of hot climate are painted white, they reflect the heat falling on them and thus help in keeping the houses cool.