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Q. No.Given below are two statements:
Assertion (A):
Ortho and para nitrophenols are more acidic than phenol.
Reason (R):
Phenoxide ion formed by ortho and para nitrophenols are more stable than pehenoxide ion formed by phenol.
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: Electrophilic Substitution Reactions, Uses of Phenols |
82%
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Consider the two statements given below:
| I. | The given reaction is known as Kolbe’s reaction. |
| II. | The given reaction is known as Reimer - Tiemann reaction. |
1. Both Statement I and Statement II are true.
2. Statement I is true and Statement II is false.
3. Both Statement I and Statement II are false.
4. Statement I is false, Statement II is true.
Subtopic: Phenols: Preparation & Properties |
73%
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Match the items in Column I with the items in Column II.
1. a-ii; b-iii; c-i
2. a-ii; b-ii; c-i
3. a-iii; b-i; c-i
4. a-iii; b-ii; c-ii
| Column I | Column II |
a.  |
i. Tertiary alcohol |
| b. H2C=CH−CH2OH | ii. Primary alcohol |
| c.
CH3−CH2−CH2−OH |
iii. Secondary alcohol |
2. a-ii; b-ii; c-i
3. a-iii; b-i; c-i
4. a-iii; b-ii; c-ii
Subtopic: Alcohols: Preparation & Properties |
84%
From NCERT
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Match the items in Column I with the items in Column II.
| Column I | Column II |
a.   |
i. Tertiary alcohol |
b.   |
ii. Primary alcohol |
c.  |
iii. Secondary alcohol |
1. a-ii; b-iii; c-i
2. a-iii; b-ii; c-i
3. a-iii; b-i; c-ii
4. a-i; b-ii; c-iii
Subtopic: Alcohols: Preparation & Properties |
86%
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| I: | The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group. |
| II: | o-Nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. |
| 1. | I is incorrect but II is correct. |
| 2. | Both I and II are correct. |
| 3. | Both I and II are incorrect. |
| 4. | I is correct but II is incorrect. |
Subtopic: Phenols: Preparation & Properties |
83%
From NCERT
NEET - 2022
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I. | In Lucas test, primary, secondary, and tertiary alcohols are distinguished on the basis of their reactivity with conc. \(HCl + ZnCl_2\), known as Lucas Reagent. |
| Statement II. | Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. |
| 1. | I is incorrect but II is correct |
| 2. | Both I and II correct |
| 3. | Both I and II are incorrect |
| 4. | I is correct but II is incorrect |
Subtopic: Alcohols: Preparation & Properties |
78%
From NCERT
NEET - 2022
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| I: | The product of the reaction of phenol with bromine depends on the nature of the solvent. |
| II: | The reaction of phenol with bromine in CHCl3 gives a monosubstituted bromo derivative whereas the reaction of phenol with bromine water yields a trisubstituted bromo derivative of phenol. |
In light of the above statements, choose the most appropriate answer from the options given below:
| 1. | I is correct and II is incorrect |
| 2. | I is incorrect and II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Electrophilic Substitution Reactions, Uses of Phenols |
83%
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NEET - 2022
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Assertion : The order of reactivity of alcohol in Luca's test is 3° >2° > 1°
Reason : The order of stability of carbocation intermediate is 3° >2° > 1°
1. Both assertion and reason are true, and reason is the correct explanation of the assertion
2. Both assertion and reason are true, but reason is not correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
Subtopic: Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
76%
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Match the following:
| List I | List II | ||
| i. | O2N-C6H5-OCH3 (p) | a. | 4-Ethoxy-1,1-dimethylcyclohexane |
| ii. | C2H5OCH2-CH(CH3)2 | b. | 1-Chloro-2-methoxyethane |
| iii. | CH3OCH2CH2Cl | c. | 1-Ethoxy-2-methylpropane |
| iv. |   |
d. | 1-Methoxy-4-nitrobenzene |
| i | ii | iii | iv | |
| 1. | d | c | b | a |
| 2. | c | d | b | a |
| 3. | a | c | b | d |
| 4. | b | c | d | a |
Subtopic: Ethers: Preparation & Properties, Uses |
89%
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Select the correct option based on the statements below:
| Assertion (A): | Phenols give o-and p-nitrophenol on nitration with conc. HNO3 and H2SO4 mixture. |
| Reason (R): | —OH group in phenol is o-, p-directing. |
| 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: Electrophilic Substitution Reactions, Uses of Phenols |
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