What is the name of the electrophile involved in the below reaction? 

1. Dichloromethyl cation \((^{+}CHCl_{2})\)

2. Formyl cation \((^{+}CHO)\)

3. Dichloromethyl anion \((^{-}CHCl_{2})\)

4. Dichlorocarbene (:CCl2)

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to:

1. Formation of intramolecular H-bonding
2. Formation of carboxylate ion
3. More extensive association of carboxylic acid via van der waals force of attraction
4. Formation of intermolecular H-bonding
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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A, X, Y, and Z in the above-mentioned reaction are:
 
 

A X Y Z
1.   Methoxy-
methane
Ethanol Ethanoic acid Semicarbazone
2. Ethanal Ethanol But - 2 - enal
 semicarbazone
3. Ethanol Acetaldehyde Butanone Hydrazone
4. Methoxy-
methane
Ethanoic acid Acetate Hydrazine
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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NEET - 2017
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Cyclohexanone when undergoes aldol condensation and heating produces:
 

1.  2.
3. 4.
Subtopic:  Name Reaction |
 67%
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In the below reaction, the structure of "A" is:

1.  2.
3. 4.
 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
NEET - 2016
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What is the correct order of the carboxylic acids' strength?

I. II. III.
 
1. I > II > III 2. II > III > I
3. III > II > I 4. II > I > III
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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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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A reagent that can distinguish cis-cyclopenta-1,2-diol from the trans-isomer is:
1. Ozone
2. MnO2
3. Aluminium isopropoxide
4. Acetone
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
From NCERT
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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 |
 84%
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