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Hydrogen bonding is responsible for maintaining the alignment of ____________

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Hydrogen bonding is responsible for maintaining the alignment of ____________

(a) Stereoregular chains of isotactic polypropylene

(b) Polyesters

(c) Polyacrylonitrile

(d) Polyamides

The question was posed to me in a national level competition.

This interesting question is from Fibers in chapter Polymers of Engineering Chemistry I

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The correct choice is (d) Polyamides

To elaborate: Hydrogen bonding is responsible for maintaining the alignment of polyamides and polyurethanes. Polyamides are polymer of a type made by the linkage of an amino group of one molecule and a carboxylic acid group of another.

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