JEE Main Chemistry question

Chemistry Hydrocarbons JEE Main

When moles of react with 1,2-dibromopropane, followed by treatment with bromoethane, pent-2-yne is formed. What is the value of ?

Answer: 3

Solution

1,2-Dibromopropane undergoes double dehydrohalogenation with (two equivalents) to give propyne, and a further equivalent of deprotonates the terminal alkyne to form the sodium

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Question ID VK-148392