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Standard VIII
Biology
Biomagnification
19. Natural r...
Question
19. Natural rubber is a polymer of isoprene (2 methyl buta 1,3 downs) if natural rubber is treated with Ozone followed by zinc/H2O the final product will be
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Q.
Assertion :The IUPAC name of isoprene is 2-methyl buta-1 ,3-diene. Reason: Isoprene unit is a monomer of natural rubber.
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.
In the isoprene polymer all the isoprene have:
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.
Which rubber is not a polydiene?
Q.
Assertion :Natural rubber is a polymer of cis-isoprene. Reason: Polytrans isoprene is called Gutta percha.
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.
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