Question

Hydrolysis of cyanohydrin derivative produces.
A.Carboxylic acids
B.Alcohols
C.Aldehydes
D.Ketones

Answer 1

 Hint:
 For solving this problem, you need to know the structure of cyanohydrin and how cyanohydrin is formed. It is obvious that in cyanohydrin, cyanide group is present. We want to know the reaction of hydrolysis for solving this problem.

Complete step by step answer:
First of all, Let us check how the cyanohydrin will be formed. For the formation of cyanohydrin, the carbonyl group is treated with hydrogen cyanide to form cyanohydrin. So, cyanohydrin has hydroxyl group and cyanide group with two other alkyl groups. On hydrolysis, the cyanide group will convert to the carboxylic group and leads to the formation of carboxylic acid.
Since the hydrolysis of cyanohydrin gives the carboxylic acids, the correct option for this question will be (a).
Additional Information:
${{\text{R}}_{\text{2}}}{\text{C}}\left( {{\text{OH}}} \right){\text{CN}}$ Is the general formula for cyanohydrins in which R may be hydrogen, alkyl or aryl group.
Cyanohydrins are a very industrial important starting material for many carboxylic acids and amino acids.
Cyanohydrin can be prepared by treating ketones or aldehydes with hydrogen cyanide in presence of an excess amount of catalyst sodium cyanide.
Cyanohydrin reaction is the reaction in which cyanohydrin is formed from the aldehydes or ketones.
In strecker amino acid synthesis, cyanohydrins are used as an intermediate.
Since the decomposition of acetone cyanohydrin with the contact of water, acetone cyanohydrins are extremely hazardous substances.

Note:
The name reaction cyanohydrin reaction is not a reaction in which the reactant is cyanohydrin. But the cyanohydrin reaction is the reaction of synthesis of cyanohydrin.