Q. No.
Treatment of cyclopentanone = o with methyl lithium gives which of the following species?
1. Cyclopentanonyl anion
2. Cyclopentanonyl cation
3. Cyclopentanonyl radical
4. Cyclopentanonyl biradical
2. Cyclopentanonyl cation
3. Cyclopentanonyl radical
4. Cyclopentanonyl biradical
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Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagents is
1. A Grignard reagent
2. Hydrazine in presence of feebly acidic solution
3. Hydrocyanic acid
4. Sodium hydrogen sulphite
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2. Carboxylic acid
3. Aromatic acid
4. Schiff base
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The correct order of strengths of the carboxylic acids
1. I>II>III
2. II>III>I
3. III>II>I
4. II>I>III
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Compound A, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell.
A and Y are respectively
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
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Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
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
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Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?
1.
2.
3.
4.
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Consider the reactions:
Identify A, X, Y and Z
1. A- Methoxymethane, X-Ethanol, Y-Ethanoic acid, Z-Semicarbazide.
2. A- Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazide.
3. A- Ethanol, X-Acetaldehyde, Y-Butanone, Z-Hydrazone.
4. A- Methoxymethane, X-Ethanoic acid, Y-Acetate, Z-Hydrazine.
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