Compound A of molecular formula C(9)H(7)...

Compound A of molecular formula `C_(9)H_(7)O_(2)Cl` exists is keto form and predominantly in enolic form B. On oxidation with `KMnO_(4),` A give m-chlorobenzoic acid. Identify A and B

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Formula `C_9H_7O_2`exist in keto form and predominantly in enolic form so, it must contain `-underset(O)underset(||)C-CH_2` group. Oxidation of (A) gives m-chlorobenzoic acid.

Hence, the compound should have a skeleton structure as,

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