Question

Which of the following plastics do not have cross-links between their polymer chains
(A) Nylon
(B) Nekamine
(C) Terylene
(D) Bakelite
A. A and B
B. B and C
C. A and C
D. C and D

Answer 1

Answer:

(b) B and C

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Answer 2

C. A and C

Nylon and Terylene

Explanation:

Option B should be Melamine. It is misspelt as Nekamine.

Thermosetting plastics are prepared from low molecular mass semi-fluid substances. Thermosetting plastic can withstand very high temperatures. During its curing process, the polymers link together to form a permanent chemical bond. They are poor conductors of heat and electricity and hence used in electric switches, sockets, plus, frying pan handles, etc.

Bakelite and melamine are thermosetting plastics that have cross-links between their polymer chains.

Nylon and Terylene are synthetic fibres.

Option C is the answer.