Q.

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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a

I−Q,II−R and  III−P

b

I−R,II−P and  III−Q

c

I−R,II−Q and  III−P

d

I−P,II−Q and  III−R

answer is B.

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