Polymers Question 72
Question: Given the polymers (i) Nylon-6, 6; (ii) Buna-S; (iii) Polythene. Arrange these in increasing order of their inter-molecular forces (lower to higher)
Options:
A) (i)>(ii)>(iii)
B) (ii)>(iii)>(i)
C) (ii)<(iii)<(i)
D) (iii)<(i)<(ii)
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Nylon - 6, 6 is a fibre with hydrogen bonds thus have strongest intermolecular forces. Buna-S is a elastomer whereas polythene is thermoplastic, the intermolecular forces of attraction in thermoplastics is intermediate between elastomer and fibres. Therefore forces in elastomers are weakest.
BETA
