Question

Ventilators are made close to the ceilings.

Answer 1

Convection:

1. The process of heat transfer in liquids and gases, from the hotter region to the cooler region accompanied by the movement of matter is called convection.
2. For example, ventilators are provided near ceilings. The warm air leaves the room through the ventilators.
3. Cool fresh air from outside enters the room through doors and windows.