alleryAmong the three classes of hydrocarbons, which is described as the most reactive because of the bond it carries?
AAlkanes
BAlkynes
CCycloalkanes
DSaturated hydrocarbons
Answer & Solution
Correct answer: B. Alkynes
1. Alkanes have only single bonds and are the least reactive, so rule them out.
2. Saturated hydrocarbons and cycloalkanes are similarly unreactive.
3. Alkynes carry a carbon-carbon triple bond, which makes them the most reactive.
4. Hence alkynes are the most reactive class.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 11 "Carbon and its Compounds", p.165_
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