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Q. No.Given below are two statements:
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.
In the light of the above statements, choose the most appropriate answer from the options given below:
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%
From NCERT
NEET - 2022
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The increasing order of reactivity of the following compounds towards acid-catalyzed dehydration is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
| 1. | (II) < (III) < (I) < (IV) | 2. | (II) < (I) < (III) < (IV) |
| 3. | (I) < (III) < (IV) < (II) | 4. | (III) < (I) < (II) < (IV) |
Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
69%
From NCERT
NEET - 2022
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Subtopic: Alcohols: Preparation & Properties |
63%
From NCERT
NEET - 2022
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Subtopic: Ethers: Preparation & Properties, Uses |
73%
From NCERT
NEET - 2022
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Match the reagents (List-I) with the products (List-II) obtained from phenol:
| List-I | List-II | ||
| (A) | (i) NaOH (ii) CO2 (iii) H+ |
(I) | Benzoquinone |
| (B) | (i) Aqueous NaOH + CHCl3 (ii) H+ |
(II) | Benzene |
| (C) | Zn dust, \(\Delta\) | (III) | Salicylaldehyde |
| (D) | Na2Cr2O7, H2SO4 | (IV) | Salicylic acid |
| (A) | (B) | (C) | (D) | |
| 1. | (III) | (IV) | (I) | (II) |
| 2. | (II) | (I) | (IV) | (III) |
| 3. | (IV) | (III) | (II) | (I) |
| 4. | (IV) | (II) | (I) | (III) |
Subtopic: Phenols: Preparation & Properties |
88%
From NCERT
NEET - 2022
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Which one of the following reaction sequences is the incorrect method to prepare phenol?
| 1. | Aniline, NaNO2 + HCl, H2O, heating |
| 2. | Cumene, O2, H3O+ |
| 3. |  |
| 4. |  |
Subtopic: Phenols: Preparation & Properties |
66%
From NCERT
NEET - 2022
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Subtopic: Alcohols: Preparation & Properties |
70%
From NCERT
NEET - 2023
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Which amongst the following will be most readily dehydrated under acidic conditions?
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
51%
From NCERT
NEET - 2023
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