Discussion
Assertion (A): The direction of liquor flow is reversed periodically in package dyeing.
Reason (R): Flow in one direction alone would leave the far side of the package differently dyed.
Answer: B
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. The liquor loses dye as it passes through the yarn, so the layer it reaches first takes up more than the layer it reaches last. Reversing the flow periodically - in to out, then out to in - equalises the exposure and prevents a package that is darker on the inside than the outside.
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