Discussion
Assertion (A): Desizing is carried out before scouring rather than after.
Reason (R): Alkaline scouring can fix a starch size on the fabric and make it far harder to remove.
Answer: A
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the necessity of the order. Hot alkali can set a starch size, making it far harder to remove afterwards, and it wastes scouring chemicals on degrading size rather than on the natural impurities. Desizing first also removes a large part of the total load, so the scour is more effective for the same conditions.
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