ChemistryNEET 2019Alkenes and alkynes: addition reactions, Markovnikov

Hydrocarbons

The number of sigma ( $σ$ ) and pi ( $π$ ) bonds in pent-2-en-4-yne ( $C H_{3} - CH = CH - C \equiv CH$ ) is:

A.10 $σ$ bonds and 3 $π$ bonds✓
B.8 $σ$ bonds and 5 $π$ bonds
C.11 $σ$ bonds and 2 $π$ bonds
D.13 $σ$ bonds and no $π$ bonds

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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From Chemistry › Hydrocarbons › Alkenes and alkynes: addition reactions, Markovnikov — lectures, notes and every past question on it.

Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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