MCQ practice · SSC Chemistry Board questions · Chapter 11: Mineral Resources: Fossils
Which is the formula of benzene?
Think it through first, then pick an option.
- a C₆H₆
- b C₁₀H₂₂
- c C₁₀H₁₆O
- d C₁₂H₂₆O
Answer and explanation
Correct answer: a C₆H₆
Benzene's formula is C₆H₆, an aromatic hydrocarbon.
Why the other options are wrong
- b C₁₀H₂₂: C₁₀H₂₂ is decane, an alkane (CₙH₂ₙ₊₂); benzene is C₆H₆.
- c C₁₀H₁₆O: C₁₀H₁₆O contains oxygen, so it is not even a hydrocarbon; benzene is C₆H₆.
- d C₁₂H₂₆O: C₁₂H₂₆O contains oxygen, so it is not a hydrocarbon; benzene is C₆H₆.
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