The correct match between Item -1 (starting material) and Item II (reagent) for the preparation of benzaldehyde is: Item I Item II I. Benzene P. HCl andSnCl2,H3O+ II. Benzonitrile Q. H2,Pd−BaSO4,S &Quinoline III. Benzoyl chloride R. CO, HCl and AlCl3
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