Acetaldehyde reacts with semicarbazide to yield the following as a product:

1. \( {CH_3CH=NHNH_2} ~\)
2. \({CH_3CH=NCONHNH_2}~~~\)
3. \({CH_3CH=NNH-CO-NH_2}~~~~~\)
4.  
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Cyanohydrin of which of the following compounds on hydrolysis gives an optically active product:

1. HCHO

2. CH3CHO

3. CH3COCH3

4. All of the above

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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RCHO and NH2NH2 react with each other in an acidic medium. The product obtained is:

1. RCON3

2. RCH=NH

3. RCH2NH2

4. RCH=NNH2

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The product P is:

1. 2.
3. 4.
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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A and B in the following reactions are:

1.
2.
3.
4.
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Which one among the given options, can be oxidized to produce a carbonyl compound?

1. o-Nitrophenol

2. Aniline

3. 2-Methyl-2-hydroxypropane

4. 2-Hydroxy propane 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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