Q.

Which of the following fibres is considered as the stron est natural fibre?

A. Cotton
B. Jute
C. Wool
D. Silk
Answer» D. Silk
Explanation: Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
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Biology (GK)

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