Question

Assertion (A): Woollen clothes keep us warm.
Reason (R): Wool fibres are made of a particular protein which is a bad conductor of heat.

Select the correct answer using the codes given below:

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true but R is not the correct explanation of A
  3. A is true but R is false
  4. A is false but R is true

Answer:

Option A: Both A and R are true and R is the correct explanation of A

Detailed Solution:

The correct answer is “Both A and R are true and R is the correct explanation of A”.

Woollen clothes are known for their ability to provide warmth. Wool fibers are primarily composed of a protein called keratin. Keratin has properties that contribute to wool being a poor conductor of heat.