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Q. No.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 |
72%
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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 |
77%
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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): | 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 |
65%
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Subtopic: Ethers: Preparation & Properties, Uses |
83%
From NCERT
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 |
72%
From NCERT
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 |
76%
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The product that forms when sodium phenoxide is heated with ethyl iodide is-
1. Phenetole
2. Ethyl phenyl alcohol
3. Phenol
4. None of the above
Subtopic: Ethers: Preparation & Properties, Uses |
59%
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Ethyl chloride is converted into diethyl ether by -
| 1. | Wurtz reaction | 2. | Grignard reaction |
| 3. | Perkin's reaction | 4. | Williamson's synthesis |
Subtopic: Ethers: Preparation & Properties, Uses |
87%
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Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
57%
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