Hydrocarbons 2 Question 31
31. The number of structural and configurational isomers of a bromo compound, $\mathrm{C}{5} \mathrm{H}{9} \mathrm{Br}$, formed by the addition of $\mathrm{HBr}$ 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:
- $\mathrm{CH}{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}{2} \mathrm{CH}_{3}+\mathrm{HBr} \longrightarrow$
geometrical isomers
Therefore, two structural and four configurational isomers.
