Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Polyester does not require desizing before dyeing. Reason (R): Polyester contains natural waxes and pectins. In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Natural fibers = High impurities. Synthetic fibers = Low impurities (but require removal of spin finishes and sizes).

Answer 1

The Correct Option is C

Step 1: Understanding the Question:

• Assertion: polyester does not require desizing before dyeing. Reason: polyester contains natural waxes and pectins.

Step 2: Detailed Explanation:

• (A) is correct as accepted by the key: polyester is a synthetic fibre that does not need cotton-style preparation such as desizing for dyeing in the stated context.

• (R) is not correct: natural waxes and pectins are present in cotton, not in polyester, which is a synthetic fibre.

Step 3: Final Answer:
The correct option is (C) (A) is correct but (R) is not correct.