Question

The formation of cyanohydrin from acetone is which type of reaction?

• A. Electrophilic substitution reaction
• B. Electrophilic addition reaction
• C. Nucleophilic addition reaction
• D. Nucleophilic substitution reaction

Hint:

Ketones + HCN $\rightarrow$ Cyanohydrin (Nucleophilic Addition).

Answer 1

The Correct Option is C

Step 1: Concept
Carbonyl groups ($C=O$) in ketones typically undergo addition reactions initiated by nucleophiles.
Step 2: Analysis
The $CN^{-}$ ion attacks the partially positive carbonyl carbon, followed by protonation of the oxygen.
Step 3: Conclusion
Since the nucleophile ($CN^{-}$) attacks first, it is a nucleophilic addition reaction.
Final Answer: (C)