Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Houses made of concrete roofs overlaid with foam keep the room hotter during summer.
Reason R: The layer of foam insulation prohibits heat transfer, as it contains air pockets.
In the light of the above statements, choose the correct answer from the options given below.

• A. A is true but R is false.
• B. A is false but R is true.
• C. Both A and R are true and R is the correct explanation of A.
• D. Both A and R true but R is NOT the correct explanation of A.

Answer 1

The Correct Option is B

Reason R is true: Foam insulation reduces heat transfer due to the presence of air pockets which are poor conductors of heat. However, Assertion A is false. Foam insulation is used to keep the room *cooler* during summer and warmer during winter by acting as a heat insulator.