First slide

Alkynes

Question

Acetylene can be prepared from

Moderate

A

Potassium fumarate
B

Calcium carbide
C

Ethylene dibromide
D

All of these

Solution

[Step 1]: Kolbe electrolysis of Potassium fumarate gives Acetylene.
[Step 2]: hydrolysis of calcium carbide will give Acetylene.
[Step 3]: dehydrohalogenation of ethylene bromide in the presence of $N a N H_{2}$ will give Acetylene

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