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Assertion (A): For making rubber synthet...

Assertion (A): For making rubber synthetically, isoprene molecules are polymerised.
Reason (R) : Neoprene (a polymer of chloroprene) is a synthetic rubber.

A

(A) and (R ) both are correct statement but reason does not explain (A)

B

(A) and (R ) both are correct statements and (R ) explains the (A)

C

Both (A) and (R ) are wrong statement

D

(A) is wrong statement and (R ) is correct statement

Text Solution

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The correct Answer is:
D
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CHHAYA PUBLICATION-POLYMERS -SOLVED NCERT EXEMPLAR PROBLEMS
  1. To have practical applications why are cross links required in rubber?

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  2. Why does cis-polyisoprene possess elastic property?

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  3. What is the structural difference between HOP and LDP? How does the st...

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  4. What is the role of benzoyl peroxide in addition polymerisation of alk...

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  5. Which factor imparts crystalline nature to a polymer like nylon?

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  6. Name the polymers used in laminated sheets and give the name of monome...

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  7. Which type of biomolecules have some structural similarity with synthe...

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  8. Why should the monomers used in addition polymerisation through free r...

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  9. Assertion (A): Rayon is a semi synthetic polymer and is taken as a bet...

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  10. Assertion (A): Most of the synthetic polymers are not biodegradable....

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  11. Assertion (A): Olefinic monomers undergo addition polymerisation. R...

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  12. Assertion (A): Polyamides are best used as fibres because of high tens...

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  13. Assertion (A): For making rubber synthetically, isoprene molecules are...

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  14. Assertion (A): Network polymers are thermosetting. Reason (R) : Net...

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  15. Assertion (A): Polytetrafluoroethylene is used in making non-stick coo...

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  16. Synthetic polymers do not degrade in the environment for a long time. ...

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  17. Differentiate between rubbers and plastics on the basis of intermolecu...

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  18. Phenol and formaldehyde undergo condensation to give a polymer (A) whi...

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  19. Low density polythene and high density polythene, both are polymers of...

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  20. Which of the following polymers soften on heating and harden on coolin...

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