Rayon is a man-made fibre produced from cellulose (wood pulp) that closely resembles natural silk in look and feel, which is why it's commonly called 'artificial silk'. PVC and Bakelite are plastics, and Dacron is a polyester fibre. So the correct answer is Rayon, option (3).
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Related Questions
A student scored 72, 68, x and 80 marks in four tests. If the mean marks of the four tests is 75, find the value of x.