Question

Which fibres catch fire easily. Wool cotton nylon silk

Answer 1

I think nylon is the fibre that catches fire easily.

Answer 2

Nylon can catch fire easily among given options.

Explanation:  

Nylon fiber catch fire easily since it is synthetic. Synthetic fibers are prepared by joining of small sub-units known as chemical substance in a chain like arrangement.

Nylon and Rayon are well known examples of synthetic fiber. Nylon is the first form of fiber which is fully synthetic in nature and produced from coal, water and air. It is used for manufacturing of articles such as sleeping bags, socks, ropes, tents etc..