Synthetic fibres like nylon-6,6 are very strong because they have________.

Options

A. They have high molecular weights and high melting points
B. They have a high degree of cross-linking by strong C − C bond
C. They have linear molecules consisting of very long chains
D. They have linear molecules interlinked with forces like hydrogen bonding

Answer

D

Explanation

They have linear molecules interlinked with forces like hydrogen bonding.