(a) Out of p-tolualdehyde and p-nitrobenzaldehyde, which one is more reactive towards nucleophilic addition reactions, why?
 (b) Write the structure of the product formed when acetone reacts with 2,4 DNP reagent.
 OR
 Convert the following:
 (a) Benzene to m-nitrobenzaldehyde
 (b) Bromobenzene to benzoic acid
                    
            
            Solution