Natural rubber is cis-polyisoprene and is prepared from latex which is obtained from rubber tree (Hevea brasitiensis).
Which one of the following statements is not true?
Held on 30 Apr 2008 · Verified 9 Jul 2026.
In vulcanisation, the formation of sulphur bridges between different chains make rubber harder and stronger
Natural rubber has the trans-configuration at every double bond
Buna-S is a copolymer of butadiene and styrene
Natural rubber is a 1,4-polymer of isoprene
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Markovnikov's rule is applicable to:
Which of the following is a reducing sugar?
Identify the suitable reagent for the following conversion 
How many products (including stereoisomers) are expected from monochlorination of the following compound? 
Which one of the following enzymes contains 'Haem' as the prosthetic group?
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