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# Given the polymers arrange them in the decresing order of their intermolecular forces: A=Nylon 66, B=Buna -S and C=Polythene.

$\begin {array} {1 1} (a)\;A > B > C & \quad (b)\;B > C > A \\ (c)\;B < C < A & \quad (d)\;C < A < C \end {array}$

Nylon-6,6 (PA66) is semicrystalline polyamide commonly used in fiber applications such as carpeting, clothing, and tire cord. It is also used as an engineering material in bearings and gears due to its good abrasion resistance and self-lubricating properties.
Ans : (a)