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Which one of the following statements is...

Which one of the following statements is not true?

A

Buna-S is a copolymer of butadiene and styrene

B

Natural rubber is a 1,4-polymer of isoprene

C

In vulcanization, the formation of sulphur bridges between different chains makes rubber harder and strongen

D

Natural rubber has the trans-configuration at every double bond

Text Solution

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The correct Answer is:
D
Natural rubber has only cis configuration about the double bond.
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BRILLIANT PUBLICATION-POLYMERS, BIOMOLECULES AND CHEMISTRY IN EVERYDAY LIFE -LEVEL -II
  1. On complete hydrogenation, natural rubber produces

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  2. Which among the following is monomer of neoprene?

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  3. Which one of the following statements is not true?

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  4. Buna-N synthetic rubber is a copolymer of

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  5. Which one of the following sets forms the biodegradable polymer? : ...

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  6. In which of the following polymers, ethylene glycol is one of the mono...

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  7. The method preferred for determining the molecular weight of polymer i...

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  8. SBR (GRS, Buna-S, Cold Rubber) is obtained by free radical copolymeris...

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  9. Free radical polymerisation requires a free radical initiator. The mos...

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  10. Which among the following statement is correct regarding polyurethanes...

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  11. If N1, N2, N3, ..... are the number of molecules with molecular masses...

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  12. Which of the following polymers can be used for lubrication and as an ...

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  13. Which of the following sets contains only thermoplastics?

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  14. Which of the following sets contains only copolymers?

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  15. Which statement below does not occur during the formation of an additi...

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  16. The incorrect statement regarding maltose is:

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  17. Pick up the incorrect statement from the following.

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  18. Amino acids are classified as acidic, basic or neutral depending upon ...

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  19. Which type of interactions are responsible for making thealpha-helix s...

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  20. On boiling, what structural changes take place in the egg white?

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