Hydrocarbons - Result Question 48

####31. The number of structural and configurational isomers of a bromo compound, $C _5 H _9 Br$, formed by the addition of $HBr$ to 2-pentyne respectively, are

(1988, 1M)

(a) 1 and 2

(b) 2 and 4

(c) 4 and 2

(d) 2 and 1

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Answer:

Correct Answer: 31. (d)

Solution:

  1. $CH _3-C \equiv C-CH _2 CH _3+HBr \longrightarrow$

geometrical isomers

Therefore, two structural and four configurational isomers.



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