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Question

Which of the following molecules has all the effects : inductive, mesomeric and Baker Nathan effect ?

A
C2H5Cl
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B
CH3CH=CH2
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C
CH2=CHCH=CH2
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D
CH3CH=CHC||OCH3
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Solution

The correct option is B CH3CH=CHC||OCH3
In CH3CH=CHC(=O)CH3, presence of CH3CH= group shows no bond resonance (Baker nathan effect), presence of alternate π bond and electron negative O shows mesomeric effect and CH3 positive inductive effect and C=O group shows negative inductive effect.

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