NEET 2025 · ChemistryPrevious Year Question
Among the compounds I, II and III shown, the correct order of bond dissociation energy of the C–H bond marked with is: (I) benzene, aryl (sp) C–H; (II) phenylacetylene , terminal alkynyl (sp) C–H; (III) 3-methylenecyclopropane / cyclopropene bearing an exocyclic , the methylene (sp) C–H.
Answer: (C) II > I > III.
- A.III > II > I
- B.II > III > I
- C.II > I > III✓
- D.I > II > III
Correct Answer
(C) II > I > III
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