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FE Civil Engineering Exam Prep

Category - Civil Engineering

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Which of the following compounds contains a double bond?

C₂H₆
C₂H₄
C₃H₈
CH₄
C₄H₁₀

Explanation

Answer: C₂H₄

Hydrocarbons with the formula C_nH_2ncontain double bonds. The only compound with this formula, C₂H₄, must contain a double bond.

Among the listed compounds, C2H4 (ethylene or ethene) contains a double bond. The molecular structure of ethylene consists of two carbon atoms connected by a double bond, with each carbon atom also bonded to two hydrogen atoms. In contrast, the other compounds listed (C2H6, C3H8, CH4, C4H10) contain only single bonds between their atoms.

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