Multiple choice

By which of the following processes is the impure and warm air inside a room continuously replaced by fresh air from outside?

  1. Conduction

  2. Ventilation

  3. Radiation

  4. Convection

  5. Refrigeration

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Ventilation is the process by which impure and warm air inside a room is continuously replaced by fresh air from outside.