Which of the Following Compounds Contains a Carbon-Carbon Double Bond

Question

Which of the following compounds contains a carbon-carbon double bond?
A) ethane
B) ethylene
C) methylene
D) acetylene

Accepted Answer

Ethylene is the only one of the options that contains a carbon-carbon double bond. Ethane consists of only single bonds between carbons, methylene is not a compound but rather a functional group consisting of a carbon atom bonded to two hydrogen atoms, and acetylene contains a carbon-carbon triple bond, not a double bond.