Q.

A hydrocarbon has molecular formula X C6H6. Also, X has triple bonds as the only type of unsaturation, i.e., it has neither double bonds nor any ring structure. How many different IUPAC name can be assigned to X?

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a

7

b

3

c

4

d

5

answer is A.

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Detailed Solution

The given formula of X indicates that it has two triple bonds (four degree of unsaturation). Hence, possible diynes are

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All of the above five diynes have different IUPAC names.

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A hydrocarbon has molecular formula X C6H6. Also, X has triple bonds as the only type of unsaturation, i.e., it has neither double bonds nor any ring structure. How many different IUPAC name can be assigned to X?