Which compound gives a yellow precipitate with iodine and alkali?

Arrange the following reagents in the correct order in which the above transformation is carried out:

Compound $A$ $(C_3H_6O)$ undergoes the following reactions to form $B$ and $C$. Identify $A, B$ and $C$.

Dimethyl ketones are usually characterized through

Identify the major product $A$ in the following reaction:
[Image of the reaction: $A$ substituted tetralin derivative with a ketone group,a chlorine atom,and a nitro group,reacting with $N_2H_4/KOH/H_2O$ (Wolff-Kishner reduction)]

The final product of the following reaction is/are: