JEE Advanced · 2009 · 12 Apr 2009 · Paper 1 · Polymers

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Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest is

(A)Nylon
(B)Poly(vinyl chloride)
(C)Cellulose
(D)Natural Rubber✓ Correct

Answer: (D)

Solution

The intermolecular forces in different polymers:

Nylon: Strong hydrogen bonding between chains
Cellulose: Extensive hydrogen bonding
Poly(vinyl chloride): Dipole-dipole interactions
Natural rubber: Only weak van der Waals forces

Natural rubber has the weakest intermolecular forces because it consists of long hydrocarbon chains with only weak van der Waals interactions between them.

Therefore, the answer is (D) Natural Rubber.

JEE Advanced · 2009 · 12 Apr 2009 · Paper 1 · Single correct option

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