A) In tautomerism, the tautomers exist as an equilibrium mixture
B) In resonance, the resonating structure exist as an equilibrium mixture
C) A branched chain isomer has a lower boiling point than the corresponding straight chain compound
D) The dextro and laevo forms of an optically active substance are not super-imposable
Correct Answer: B
Solution :
In case of resonance, the resonating structures are quickly interchanging in one-another. It is the resonance hybrid state, which remains in equilibrium, with all resonating structures.
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