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Given below a...

Question

Given below are two statements, one is Assertion (A) and other is Reason (R).

Assertion (A): Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.

Reason (R): The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with coiled structure.
In the light of the above statements, choose the correct one from the options given below:

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Solution

The cis-polyisoprene molecule consists of various chains held together by weak van der Waals interactions and has a coiled structure.

Hence assertion is true but reason is false.

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Similar questions

Assertion (A) For making rubber synthetically, isoprene molecules are polymerised.

Reason (R) Neoprene (a polymer of chloroprene) is a synthetic rubber.

(a) Assertion and Reason both are correct statement But reason does not explain Assertion.

(b) Assertion and Reason both are correct statement and Reason explains the Assertion.

(c) Both assertion and reason are wrong statements.

(d) Assertion is correct statement and Reason is wrong statement.

(e) Assertion is wrong statement and reason is correct statement.

Q. Assertion :Natural rubber is a polymer of cis-isoprene. Reason: Polytrans isoprene is called Gutta percha.

Assertion: Natural rubber is all cis-polyisoprene.

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Reason R: Planarity is one, of the requirements of aromatic systems.
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In the light of the above statements, choose the most appropriate answer from the options given below.

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