Which is not true about natural rubber?

Its monomer is isoprene

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It exhibits trans configuration

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It is formed by 1,4-addition

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It is vulcanized to increase its mechanical strength

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Solution

The correct option is B It exhibits trans configuration
a) The monomer of natural rubber is isoprene (2-methyl-1,3-butadiene)
b) Natural rubber exhibits cis configuration for the methyl groups.
c) Natural rubber is formed by 1,4-addition.
d) Vulcanization of rubber improves the mechanical strength of the rubber by heating it in the presence of sulfur.

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Similar questions

Q. Natural rubber or raw rubber consists of basic material latex which is a dispersion of isoprene. During the treatment, this isoprene forms a high molecular weight polymer of isoprene. Natural rubber can be obtained from five hundred different species of plants.
Consider the following properties of rubber,
(i) Tensile strength of vulcanized rubber is almost ten times more than raw rubber.
(ii) The elasticity of the raw rubber is very high.
Choose the correct option.

On the basis of the following features, identify the correct material.
I. It is a natural polymer with elastic properties.
II. It is a polymer formed by the combination of monomer molecules, isoprene.
III. It is widely used for making goods like raincoats, gumboots, footwear, etc.

Q. Assertion :The IUPAC name of isoprene is 2-methyl buta-1 ,3-diene. Reason: Isoprene unit is a monomer of natural rubber.

Q. Vulcanization of natural rubber is carried out by the addition of which element?

Q. The repeating units of an addition polymer is formed by the simple joining of its monomer units.

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