Aldehydes, Ketones and Carboxylic Acids

[figure] Product 'P' in the above reaction is

1. [figure]
2. [figure]
3. [figure]
4. [figure]

First product of the reaction between RCHO and NH2NH2 is

1. RCH=NNH2
2. RCH=NH
3. RCH2NH2
4. RCON3

Benzoic acid may be converted into ethyl benzoate by reaction with :

1. ethyl alcohol
2. ethyl alcohol and dry HCl
3. ethyl chloride
4. sodium ethoxide.

Reduction by LiAlH4 of hydrolysed product of an ester gives

1. two alcohols
2. two aldehydes
3. one acid and one alcohol
4. two acids.