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Q. No.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 |
81%
From NCERT
NEET - 2016
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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
NEET - 2016
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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%
From NCERT
NEET - 2016
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Subtopic: Aldehydes & Ketones: Preparation & Properties |
67%
NEET - 2015
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What is the product formed when cyclopentanone reacts with methyl lithium?
1. Cyclopentanonyl anion
2. Cyclopentanonyl cation
3. Cyclopentanonyl radical
4. Cyclopentanonyl biradical
2. Cyclopentanonyl cation
3. Cyclopentanonyl radical
4. Cyclopentanonyl biradical
Subtopic: Aldehydes & Ketones: Preparation & Properties |
56%
NEET - 2015
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Compounds that can exhibit tautomerism, are:
1. l and ll
2. l and lll
3. ll and lll
4. l, ll and lll
Subtopic: Isomers & Reaction Mechanism |
53%
From NCERT
NEET - 2015
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An organic compound X having molecular formula C5H10O yields phenyl hydrazone and gives a negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. X could be:
1. Pentanal
2. 2-Pentanone
3. 3-Pentanone
4. n-Amyl alcohol
2. 2-Pentanone
3. 3-Pentanone
4. n-Amyl alcohol
Subtopic: Aldehydes & Ketones: Preparation & Properties |
64%
From NCERT
NEET - 2015
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The compound among the following that will not be soluble in
sodium hydrogen carbonate is:
| 1. | 2, 4, 6-Trinitrophenol | 2. | Benzoic acid |
| 3. | o-Nitrophenol | 4. | Benezenesulphonic acid |
Subtopic: Carboxylic Acids: Preparation & Properties |
57%
From NCERT
AIPMT - 2014
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Which of the following is the most reactive towards nucleophilic addition reaction?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Isomers & Reaction Mechanism |
83%
From NCERT
AIPMT - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
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What is the order of the stability of the following tautomeric compounds?
1. III > II > I
2. II > I > III
3. II > III > I
4. I > II > III
2. II > I > III
3. II > III > I
4. I > II > III
Subtopic: Isomers & Reaction Mechanism |
51%
AIPMT - 2013
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NEET 2023 - Target Batch - Aryan Raj Singh
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