Chemistry - GOC Question with Solution | TestHub
ChemistryGOCBond Length, Strength, Cleavage, Rotational Energy BarrierMedium2 minQB
ChemistryMediumsingle choice
Select incorrect order of bond length for indicated bond.
Options:
Answer:
D
Solution:
In (D), the indicated C–C bond in cyclopentenone has greater double-bond character due to stronger resonance, so it is shorter.
In cyclohexadienone, the indicated bond has less double-bond character, hence it is longer.
Therefore, the correct bond-length order is cyclohexadienone > cyclopentenone (longer → shorter).
The given order is the reverse, so (D) is the incorrect order.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Bond Length, Strength, Cleavage, Rotational Energy Barrier
⏱ 2mℹ️ Source: QB
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