WBCS.LIVE practice question

The freezing chest in refrigerator is kept near the top because

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

Answer options

  1. it is convenient to use.
  2. it reduces cost.
  3. it cools the remaining space by the process of conduction.
  4. convection currents are set up.

Correct answer and explanation

Correct answer: convection currents are set up.

Explanation: āœ… Correct Answer: D. convection currents are set up. šŸ“š Explanation: The cooling unit or freezer in a refrigerator is placed at the top to set up natural 'convection currents'. Since cold air is denser, it sinks to the bottom, while the warmer air from below rises to be cooled. This continuous circulation ensures that the entire space inside the refrigerator is cooled efficiently and evenly. if the freezer were at the bottom, the cold air would stay there and the top would remain warm.