Question

The process by which impure and warm air inside the room is continuously replaced by fresh air is known as :

• A. convection
• B. ventilation
• C. radiation
• D. thermal expansion

Answer 1

The correct option is B

ventilation

1. Convection: The process of heat transfer by the actual flow of particles.
2. Ventilation: The process in which impure and warm air inside a room is continuously replaced by fresh air from outside.
3. Radiation: The process of heat transfer that requires no medium.
4. Thermal expansion: The expansion produced in a matter by absorbing heat.
5. Hence option (b) ventilation is correct.