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Q.

The correct match between item I and Item II is:               Item I                                          Item II          a. Natural rubber                      I. 1, 3 – Butadiene + Styrene          b. Neoprene                             II. 1, 3-Butadiene + Acrylonitrile          c. Buna – N                             III.  Chloroprene          d. Buna – S                             IV. Isoprene

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a

a−IV,b−III,c−II,d−I

b

a−III,b−IV,c−I,d−II

c

a−III,b−IV,c−II,d−I

d

a−IV,b−III,c−I,d−II

answer is A.

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Detailed Solution

The monomer of natural rubber is isoprene. In Buna-N one of the  monomer is acrylonitrile and Butadiene In Buna S one of the monomer is styrene and Butadiene.
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