1.

Assertion : The correct order of increasing molecular forces in the given polymres is : Buna-S, Polythene, Nylon -6,6 Reason : The properties of polymers depends upon the molecular forces.

Answer»

If both assertion and reason are TRUEAND reason is the correct explanationof assertion .
If both assertion and reason are TRUE but reason is not the correct explanationof assertion .
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :Elastomers ( buna-S) have weakest intermolecularforces .
FIBRES ( nylon -6,6) have strong INTERMOLECULAR forces.Thermoplastic polymers ( POLYTHENE ) have intermolecular forces intermediate between elastomers and fibres.


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