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Q.

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) : Cis-polyisoprene molecules consists 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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a

Both (A) and (R) are true and (R) is the correct explanation of (A).

b

(A) is false but (R) is true.

c

Both (A) and (R) are true but (R) is not the correct explanation of (A)

d

(A) is true but (R) is false.

answer is C.

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Detailed Solution

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Natural rubber considered as a linear polymer of isoprene (2-methyl-1, 3-butadiene) and is also called as cis - 1, 4 - polyisoprene.

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

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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) : Cis-polyisoprene molecules consists 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 :