Question

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Answer 1

Answer:

1. (a) glucose  (b) amino acids

2. Natural fibers like cotton, wool and silk are polymers. Cotton is a polymer of glucose. Wool and silk are the polymers of amino-acids (proteins).

3.  Silk consists mainly of two proteins, fibroin and sericin.

4. ( Ist synthetic fibre ) - Rayon   ( Ist fully synthetic fibre ) - Nylon

5.

(a) It's because wood pulp under goes chemical treatment to produce rayon.

(b) Rayon fibre is also known as "artificial silk" because it resembles all the properties of silk . rayon is called a artificial silk because it looks like silk ,feels like silk

6. Properties of Rayon :

(1) stronger than natural fibres

(2) can absorb water easily

(3) can be dyed into various colours

(4) it's colour doesn't fade away easily.

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