MCQ
Assertion(A): Natural rubber becomes strong and elastic when heated with sulphur.
Reason (R): Natural rubber is mixed with 3 – 5% sulphur and heated at 100 – 150°C causes cross linking of the cis – 1, 4 – polyisoprene chains through disulphide – s – s bonds.
  • Both A and R are correct and R explains A.
  • B
    Both A and R are correct but R does not explain A.
  • C
    A is correct but R is wrong.
  • D
    A is wrong but R is correct.

Answer

Correct option: A.
Both A and R are correct and R explains A.
Both A and R are correct and R explains A.

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