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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$Assertion: Natural rubber in a polymer$ $of cis isoprene.$
$Reason: Polytrans isoprene is called$ $Gulta percha.$

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion because natural rubber is made up of up of 2-methyl -1,3 butadiene (isoprene unit ), the double bonds (two of double bonds) will still retain one of them even after the polymerization reaction. That's why natural rubber is made of is isoprene unit.

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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.

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

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

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{2n}^{2}

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