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15. (i) Tensile strength of vulcanized rubber is almost ten times more than raw rubber. (ii) Elasticity of raw rubber is very high. (a) (i) is true (ii) is false (b) (i) is false (ii) is true (c) Both (i) & (ii) are true (d) Both (i) & (ii) are false 0.1 fallowing is a monomer of natural rubber?

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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.
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