Arrange the following in order of increasing reactivity towards nucleophilic addition reactions
`C_(6)H_(5)COCH_(3), CH_(3)CHO, CH_(3)COCH_(3)`.

(a) Write the chemical reaction involved in Wolf-Kishner reduction. (b) Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction : C_(6)H_(5)COCH_(3), CH_(3)-CHO, CH_(3)COCH_(3) (c) Why carboxylic acid does not give reactions of carbonyl group ? (d) Write the product in the following reaction. CH_(3)CH_(2)CH=CH-CH_(2)CN overset(1.(i-Bu)_(2)"AlH")underset(2. H_(2)O)(to) (e) A and B are two functional isomers of compound C_(3)H_(6)O . On heating with NaOH and I_(2) , isomer B forms yellow precipitate of iodoform whereas isomer A does not form any precipitate. Write the formulae of A and B.

(a) Distinguish between PhCOEt and p-MeC_(6)H_(4)COMe by a chemical method. (b) Arrange the following in the order of increasing reactivity towards nucleophilic addition reactions. (i) CH_(3)CHO, C_(6)H_(5)COC_(6)H_(5), CH_(3)COC_(6)H_(5),CH_(3)COCH_(3) (ii) CH_(3)CHO, CF_(3)CHO, CH_(2)=CHCHO

Arrange the following compound in increasing order of reactivity towards nucleophilic addition reaction (I) C_(6)H_(5)COCH_(3) (II) CH_(3)CO - C_(2)H_(5) C_(6)H_(5)CHO (IV) CI - CH_(2) - CHO

Reactivity towards nucleophilic additions reaction of (I) IHCHO (II), CH_(3)CHO (III) CH_(3)COCH_(3) is