Which of the following fibre turns grey or yellow with age?
A.
Viscose
B.
Cotton
C.
Nylon
D.
Polyester
Correct Answer: Option B
Explanation
Cotton is a natural fiber that can turn yellow or gray with age due to exposure to light, air, and moisture. This is because cotton contains lignin, a natural pigment that can break down over time, causing the fiber to discolor.
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