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The total number of alkenes possible by ...

The total number of alkenes possible by dehydrobromination of 3-bromo-3-cyclopentylhexane using alcoholic KOH is

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The correct Answer is:
5
3-bromo-3-cyclopentylhexane has three different types of a-hydrogens marked as (a), (b) and (c) and·hence can give three structurally isomeric alkenes. But two of these can exhibit geometrical isomerism. Therefore, the total number ofalkenes possible are five as shown below:
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