alleryWhich class of hydrocarbons is represented by the general formula CₙH₂ₙ₊₂?
AAlkenes
BAlkanes
CAlkynes
DAromatics
Answer & Solution
Correct answer: B. Alkanes
1. Alkenes contain a C=C bond and follow CₙH₂ₙ.
2. Alkynes contain a C≡C bond and follow CₙH₂ₙ₋₂.
3. Alkanes contain only single bonds and follow CₙH₂ₙ₊₂.
4. The formula given is CₙH₂ₙ₊₂, so the class is alkanes.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 11 "Carbon and its Compounds", p.164_
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