Q68 of 83 Page 57

The plastic which is coated on the uniforms of firemen to make them fire-resistant is:

Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. It is used to make floor tiles, kitchenware and fire resistant fabrics.

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66

Which of the following plastics do not have cross-links between their polymer chains

(A) Nylon


(B) Nekamine


(C) Terylene


(D) Bakelite

 67

The clothes of a person working in the kitchen catch fire accidently causing severe burns. The person is most likely wearing clothes made of:

 69

Which of the following is a man-made fibre prepared from wood-pulp?

 70

The manufacture of one of the following artificial fibres contributes to deforestation this fibre is :