A ketone reacts with hydroxylamine to give

Explanation

A ketone is an organic compound containing a carbonyl group (C=O) bonded to two alkyl groups. When a ketone reacts with hydroxylamine (NH₂OH), it forms a compound called an oxime.

Here is the general reaction for a ketone (R₁CO-R₂) reacting with hydroxylamine:

\(R_1CO-R_2 + NH_2OH \rightarrow R_1C(NOH)-R_2 + H_2O\)

In this reaction, the carbonyl group (C=O) of the ketone reacts with the hydroxylamine to form a new compound with a C=N-OH group, which is the characteristic functional group of an oxime. The other products of the reaction are water (H₂O).

Therefore, the correct answer isOption D: an oxime.

Some other options mentioned are not formed during this reaction:

• Hydrazone - formed when a ketone reacts with a hydrazine (NH₂-NH₂).
• Alkanonitrile - contains a cyano group (C?N) and is not formed by the reaction of a ketone with hydroxylamine.
• Nitroso compound - contains a nitroso group (N=O) and is not formed by the reaction of a ketone with hydroxylamine.