question_answer

A compound undergoes the following reactions: (i) With saturated \[NaHS{{O}_{3}},\] it gives a white precipitate. (ii) On reduction, it gives a secondary alcohol. (iii) With \[{{I}_{2}}\] sodium carbonate, it gives iodoform. The compound is:

A)  acetaldehyde

B)  acetamide

C)  acetone

D)  ethylene dibromide

Correct Answer: C

Solution :

Acetone gives all the three reactions. It gives addition compound with sodium bisulphite and on reduction, it gives secondary propyl alcohol. With \[{{I}_{2}}\] and \[N{{a}_{2}}C{{O}_{3}},\] it gives yellow precipitate of iodoform. (Haloform reaction).