Why in the IR spectrum of Benzoyl chloride, a weak band near 1750 cm-1 – McqOptions

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1.	Why in the IR spectrum of Benzoyl chloride, a weak band near 1750 cm^-1 is formed?
A.	Inductive effect
B.	Fermi resonance between C = O band and first overtone
C.	Conjugation effect
D.	Hyperconjugation effect
Answer» C. Conjugation effect

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Why in the IR spectrum of Benzoyl chloride, a weak band near 1750 cm<sup>-1</sup> is formed?