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Q. No.Select the correct option based on statements below:
| Assertion (A): | Ether behave as bases in the presence of mineral acids. |
| Reason (R): | It is due to the presence of lone pairs of electrons on the oxygen atom. |
| 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: Ethers: Preparation & Properties, Uses |
88%
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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 |
67%
From NCERT
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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 |
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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%
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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 |
78%
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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 |
83%
From NCERT
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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%
From NCERT
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Match the items of Column I with items of Column II.
| Column l | Column ll |
| A. Solvent used in perfumes | I. Neutral ferric chloride |
| B. Wood spirit | II. Glycerol |
| C. Reagent used for detection of phenolic group | III. Methanol |
| D. By product of soap industry used in cosmetics | IV. Ethanol |
Codes:
| A | B | C | D | |
| 1. | II | III | IV | I |
| 2. | III | I | IV | II |
| 3. | I | IV | III | II |
| 4. | IV | III | I | II |
Subtopic: Alcohols: Preparation & Properties |
78%
From NCERT
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Match the reactions from Column-I with their corresponding descriptions from Column-II and select the correct option.
|
Column-l (Name of Reaction) |
Column-ll (Description of Reaction) |
||
| A. |
Reimer-Tiemann reaction |
I. |
Conversion of phenol to o-hydroxysalicylic aid |
| B. |
Kolbe's reaction |
II. |
Heated copper at 573K |
| C. |
Conversion of 2alcohol to a ketone |
III. |
Reaction of an alkyl halide |
| D. |
Williamson's synthesis |
Iv. |
Conversion of phenol to salicylaldehyde |
Codes:
| A | B | C | D | |
| 1. | II | III | IV | I |
| 2. | III | IV | I | II |
| 3. | I | IV | III | II |
| 4. | IV | I | II | III |
Subtopic: Ethers: Preparation & Properties, Uses |
90%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The addition reaction of water to but-1-ene in acidic medium yields butan-1-ol. |
| Reason (R): | Addition of water in an acidic medium proceeds through the formation of a primary carbocation. |
| 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 |
67%
From NCERT
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