The polymer containing strong intermolecular forces e.g. hydrogen bonding, is
(A)teflon
(B)nylon 6,6✓ Correct
(C)polystyrene
(D)natural rubber
Answer: (B)
Solution
Hydrogen bonding between chains needs N-H or O-H groups. Nylon 6,6 is a polyamide, and the N-H of one chain's amide group hydrogen-bonds to the C=O of a neighbouring chain, locking the chains together and giving the fibre its strength. Teflon has only C-F bonds with weak dispersion forces, while polystyrene and natural rubber are hydrocarbons with no hydrogen-bonding groups. The polymer with strong hydrogen bonding is nylon 6,6.
JEE Main · 2010 · 11 Apr 2010 · Offline · Single correct option