Question

Assertion: A room can be cooled by opening the door of a refrigerator in a closed room.
Reason: Heat flows from lower temperature (refrigerator) to higher temperature (room).

• A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• C. If assertion is true but reason is false.
• D. If the assertion and reason both are false.
• E. If assertion is false but reason is true.

Answer 1

The correct option is D If the assertion and reason both are false.

When the door of refrigerator is kept open, heat rejected by the refrigerator to the room will be more than the heat taken by the refrigerator from the room (by an amount equal to work done by the compressor). Therefore, temperature of room will increase and so it will be warmed gradually. As according to $2^{nd}$ law of thermodynamics, heat cannot be transferred on its own, from a body at lower temperature to another at higher temperature.