A) cis-polyisoprene and trans-polyisoprene
B) both are cis-polyisoprene
C) both are trans-polyisoprene
D) trans-poly chloroprene and cis-polychloroprene
Correct Answer: A
Solution :
Natural rubber is cis-polyisoprene while gutta-percha is trans-polyisoprene
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