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Which of the following statements is not...

Which of the following statements is not true? (1) Chemically, natural rubber is a linear polymer of isoprene (2) During vulcanisation, natural rubber is heated with sulphur at a temperature range between 373 K to 415 K (3) In the manufacture of tyre rubber 5% sulphur is used as cross linking agent (4) Natural rubber is crystalline

A

Chemically, natural rubber is a linear polymer of isoprene

B

During vulcanisation, natural rubber is heated with sulphur at a temperature range between 373 K to 415 K

C

In the manufacture of tyre rubber 5% sulphur is used as cross linking agent

D

Natural rubber is crystalline

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