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Q.

(A) 1,3-butadiene is the monomer for natural rubber.
(R) Natural rubber is used in tyre manu-facture.

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a

Both (A) and (R) are true and (R) is the correct explanation of (A)

b

Both (A) and (R) are true but (R) is not the correct explanation of (A)

c

(A) is true but (R) is false

d

Both (A) and (R) are false

answer is D.

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Detailed Solution

  • Natural rubber may be considered as a linear polymer of isoprene (2-methyl-1, 3-butadiene) and is also called as cis - 1,4 - polyisoprene. 
  • Question Image
  • Natural rubber is not only the primary raw material used in manufacturing most tyres, it is also crucial in helping to meet tyre safety. 
  • Vulcanized rubber is used in tyre industry.
  • So, both (A) and (R) are false.
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