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Q. No.
Subtopic: Ethers: Preparation & Properties, Uses |
83%
Level 1: 80%+
NEET - 2020
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A reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
| 1. | sec-Butyl alcohol | 2. | tert-Butyl alcohol |
| 3. | iso-Butyl alcohol | 4. | iso-Propyl alcohol |
Subtopic: Alcohols: Preparation & Properties |
74%
Level 2: 60%+
NEET - 2020
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Cyclohexanol gives best yield of cyclohexene with -
1.
2. conc.HCl
3. conc.HBr
4. All of the above
Subtopic: Alcohols: Preparation & Properties |
79%
Level 2: 60%+
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Select the correct option based on statements below:
| Assertion (A): | -OH, -OCH3 groups are o, p-directing. |
| Reason (R): | Ring is activated by the resonance effect of -OH, -OCH3 groups. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Electrophilic Substitution Reactions, Uses of Phenols |
79%
Level 2: 60%+
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Select the correct option based on statements below:
| Assertion (A): | Picric acid is more acidic than formic acid. |
| Reason (R): | Picric acid has three -COOH groups whereas formic acid has one -COOH group. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Phenols: Preparation & Properties |
74%
Level 2: 60%+
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Select the correct option based on statements below:
| Assertion (A): | Phenol does not react with NaHCO3 but 2,4,6-trinitrophenol does react with the evolution of CO2 |
| Reason (R): | 2,4,6-trinitrophenol is a stronger acid than carbolic acid. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Phenols: Preparation & Properties |
Level 3: 35%-60%
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Select the correct option based on statements below:
| Assertion (A): | The solubility of alcohols in water decreases with an increase in the number of carbon atoms. |
| Reason (R): | The non-polar alkyl group or the hydrophobic portion supports the solubility of alcohol. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Alcohols: Preparation & Properties |
68%
Level 2: 60%+
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The reagent used for the bromination of phenol to 2,4,6-tribromophenol is/are:
1. Bromine water
2. Br2, CS2
3. Br2, CCl4
4. AgBr
Subtopic: Phenols: Preparation & Properties |
84%
Level 1: 80%+
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Match the structures of the compounds given in Column I with the name of the compounds given in Column II.
| Column I(Structure) | Column II(Name) | ||
| A. |  |
(i). | Phenetole |
| B. |  |
(ii). | o-Cresol |
| C. |  |
(iii). | Catechol |
| D. |  |
(iv). | Resorcinol |
Codes:
| A | B | C | D | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iv) | (iii) | (ii) | (i) |
Subtopic: Phenols: Preparation & Properties |
84%
Level 1: 80%+
Hints
Match the starting material in Column I with the products formed (Column II) in the reaction with HI.
| Column I |
Column II |
||
| A. |  |
1. |  |
| B. |  |
2. |  |
| C. |  |
3. |  |
| D. |  |
4. |  |
| 5. |  |
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 5 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 2 | 1 |
Subtopic: Ethers: Preparation & Properties, Uses |
92%
Level 1: 80%+
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