Vanillin, used as a flavouring agent, is:
1. An Aliphatic alcohol
2. An Aromatic aldehyde
3. A Hydrocarbon
4. A Carbohydrate

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The IUPAC name for \(\mathrm{CH}_3 \mathrm{COCH}_2 \mathrm{COCH}_3\) is:
1. Pentane-2,4-dione
2. Pentane-1,4-dione
3. Pentane-2,2-dione
4. Pentane-3,4-dione
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The product formed by the reaction of an aldehyde with a primary amine is:
1. Ketone
2. Carboxylic acid
3. Aromatic acid
4. Schiff base

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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NEET - 2016
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A compound that can be reduced to the corresponding hydrocarbon by Zn-Hg/ conc. HCl is:

1. Butan-2-one                         

2. Acetic acid

3. Acetamide                             

4. Ethyl acetate

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The correct sequence of increasing orders of reactivity in nucleophilic addition reaction is:

1. Butanone < Propanone < Propanal < Ethanal

2. Butanone > Propanone > Propanal > Ethanal

3. Butanone < Propanal < Propanone < Ethanal

4.  Propanal < Propanone < Ethanal < Butanone 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The correct order of decreasing acid strength of
trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C), and formic acid (D) is:

1. B > A > D > C

2. B > D > C > A

3. A > B > C > D

4. A > C > B >D

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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From NCERT
AIPMT - 2012
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The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is:

1. A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibration.
2. A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation.
3. A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as keto-enol tautomerism.
4. A carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its corresponding enol.
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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NEET - 2016
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The most reactive compound towards the nucleophilic addition reaction is:

1. Benzaldehyde 2. p-Tolualdehyde
3. p-Nitrobenzaldehyde 4. Acetophenone
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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A compound with the molecular formula C5H10 that yields acetone on ozonolysis is:
1. 2-Methyl-2-butene
2. 2-Methyl-1-butene
3. Cyclopentane
4. 3-Methyl-1-butene

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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From NCERT
AIPMT - 2007
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The final product 'B' in the below mentioned reaction is:

1.  2.
3. 4.

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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