Consider the following statements,
I. Weakest intermolecular forces are present in elastomers.
II. Fibers possess crystealline nature.
III.Iconic bonds are present in thermolplastic polymers.
Select the correct option:

I and II

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II and III

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I and III

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I,II and III

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Solution

The correct option is A I and II
Consider following statements,the correct statements are,
(1)Electomers,the polymeric chains are held to geather by weakest intermolecular forces of attraction these weak forces permit the polymer to be stretched.
(2)fibres are thread forming solids have high tensile strength and high modules.these characteristics can be attribated to the strong intermolecular forces like hydrogen bonding.These strong forces impart close packing in turn give crystallintity.

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