Question

Which of the following compounds, when reacted with ketones forms oxime?

• A. Hydrazine
• B. Semicarbazide
• C. Hydroxyl amine
• D. Phenyl hydrazine

Hint:

An oxime is the condensation product of a carbonyl compound with hydroxylamine.

Answer 1

The Correct Option is C

Step 1: Name the product from each reagent
Hydrazine gives hydrazone, semicarbazide gives semicarbazone and phenyl hydrazine gives phenylhydrazone.

Step 2: Oxime
The oxime has the group $\text{C=N-OH}$, so the nitrogen must carry an OH. This comes only from $\text{NH}_2\text{OH}$.

Step 3: Conclusion
The required compound is hydroxylamine.

Final Answer:
Only hydroxylamine gives an oxime with a ketone. \[ \boxed{\text{(C) }\text{Hydroxyl amine}} \]