WBCS.LIVE practice question

Ventilators are provided at the top of the room

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. to bring oxygen for breathing.
  2. so that sunlight may enter the room.
  3. to maintain convectional currents to keep the air fresh in the room.
  4. to provide an outlet for carbon dioxide.

Correct answer and explanation

Correct answer: to maintain convectional currents to keep the air fresh in the room.

Explanation: āœ… Correct Answer: C) to maintain convectional currents... šŸ“š Explanation: Hot air is less dense and rises to the top of the room. Ventilators allow this warm, stale air to escape, while cooler, fresh air enters from windows and doors below. This process of convection ensures proper air circulation and freshness.