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Q. No.The number of isomeric alcohols (excluding stereoisomers) of molecular formula C6H14O which give a positive iodoform test are:
1. Three
2. Four
3. Five
4. Two
Subtopic: Alcohols: Preparation & Properties |
Level 3: 35%-60%
NEET - 2013
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Subtopic: Alcohols: Preparation & Properties |
Level 3: 35%-60%
JEE
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Consider the following reaction:
The correct conclusion about product P is:
1. Both rings will be 5-membered.
2. Both rings will be 6-membered.
3. One ring is 5-membered and the other is 6-membered.
4. One of the rings is 4-membered.
The correct conclusion about product P is:
1. Both rings will be 5-membered.
2. Both rings will be 6-membered.
3. One ring is 5-membered and the other is 6-membered.
4. One of the rings is 4-membered.
Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
Level 4: Below 35%
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Consider the following reactions:
\({R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH }\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O/ NaOH/ H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
\({R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH }\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O/ NaOH/ H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
| 1. | \(B_2H_6 \) | 2. | \(LiAlH_4 \) |
| 3. | \(NaBH_4 \) | 4. | \(H_2/Pd \) |
Subtopic: Alcohols: Preparation & Properties |
51%
Level 3: 35%-60%
NEET - 2023
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The major product of the reaction of salicylaldehyde with one equivalent of MeMgBr, followed by acid neutralization is:
1. II.
2. I.
3. IV.
4. III.
| I. |  |
II. |  |
| III. |  |
IV. |  |
1. II.
2. I.
3. IV.
4. III.
Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
Level 4: Below 35%
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Subtopic: Alcohols: Preparation & Properties |
Level 3: 35%-60%
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Identify the reaction that produces the correct major products under the given condition.
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Ethers: Preparation & Properties, Uses |
50%
Level 3: 35%-60%
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Which compound predominantly forms the meta-substituted product for the methyl group in a halogenation reaction?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Electrophilic Substitution Reactions, Uses of Phenols |
Level 3: 35%-60%
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The product of the given reaction is:
1. t-Butylether
2. 2-Methylpropene
3. 2-Methylpent-1-ene
4. 2,2,3,3-Tetramethylbutane
1. t-Butylether
2. 2-Methylpropene
3. 2-Methylpent-1-ene
4. 2,2,3,3-Tetramethylbutane
Subtopic: Phenols: Preparation & Properties |
Level 3: 35%-60%
JEE
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Which of the following represents the correct order of acidity?
1. CH3OH >C2H5OH >H2O
2. H2O >CH3OH > C2H5OH
3. CH3OH > H2O > C2H5OH
4. C2H5OH > CH3OH >H2O
1. CH3OH >C2H5OH >H2O
2. H2O >CH3OH > C2H5OH
3. CH3OH > H2O > C2H5OH
4. C2H5OH > CH3OH >H2O
Subtopic: Alcohols: Preparation & Properties |
Level 3: 35%-60%
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