KCET · Chemistry · Hydrocarbons
An organic compound ' \(A\) ' burns with a sooty flame. It is negative towards Tollen's reagent test and positive for Borsche's reagent test. The compound ' \(A\) ' is
- A acetophenone
- B acetone
- C salicylic acid
- D benzaldehyde
Answer & Solution
Correct Answer
(A) acetophenone
Step-by-step Solution
Detailed explanation
Since given compound 'A' burns with sooty flame, therefore it must be an aromatic compound. Again when it reacts with Borsche's reagent (acidic 2, 4-dinitrophenyl hydrazine solution), it yields orange precipitate. Therefore it must be a carbonyl compound, i.e., aldehyde, or ketone. But 'A' does not perform Tollen's reagent test therefore, it must be an aromatic ketone.
Hence, 'A' is acetophenone.
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