Q63 of 83 Page 57

The synthetic fibre which contains the group similar to those which give fruits their ‘sweet smell’ is:

Polyester is the synthetic fibre which contains the organic group similar-to those which give fruits their sweet smell. Terylene is a kind of a polyester.

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61

The synthetic polymer which can be used as a substitute for wool for making sweaters and shawls, etc. is:

 62

Which of the following is not a synthetic fibre?

 64

The man-made fibre which contains identical to:

 65

One of the following man-made fibre is not prepared from raw materials obtained from petrochemicals. This one is: