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Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product. In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both Statement I and Statement II are true.
2. Statement I is true but Statement II is false.
3. Statement I is false but Statement II is true.
4. Both Statement I and Statement II are false.

Correct answer: Statement I is true but Statement II is false.

Solution

Statement I is correct because the addition of sodium hydrogen sulfite to aldehydes or ketones does involve a proton transfer that leads to the formation of a stable bisulfite adduct. However, Statement II is incorrect because the reaction of hydrogen cyanide with aldehydes or ketones typically forms a cyanohydrin, not an amine.

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