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Q. No.
Subtopic: Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
61%
From NCERT
NEET - 2023
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Consider the following reactions:
\(R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O, NaOH, H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
\(R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O, NaOH, H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
| 1. | \(B_2H_6 \) | 2. | \(LiAlH_4 \) |
| 3. | \(NaBH_4 \) | 4. | \(H_2/Pd \) |
Subtopic: Alcohols: Preparation & Properties |
From NCERT
NEET - 2023
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Reagents that can be used to convert alcohols to carboxylic acids are:
(A) CrO3 - H2SO4
(B) K2Cr2O7 + H2SO4
(C) KMnO4 + KOH/H3O+
(D) Cu, 573 K
(E) CrO3+ (CH3CO)2O
Choose the most appropriate answer from the options given below:
1. (B), (C) and (D) only
2. (B), (D) and (E) only
3. (A), (B) and (C) only
4. (A), (B) and (E) only
(A) CrO3 - H2SO4
(B) K2Cr2O7 + H2SO4
(C) KMnO4 + KOH/H3O+
(D) Cu, 573 K
(E) CrO3+ (CH3CO)2O
Choose the most appropriate answer from the options given below:
1. (B), (C) and (D) only
2. (B), (D) and (E) only
3. (A), (B) and (C) only
4. (A), (B) and (E) only
Subtopic: Alcohols: Preparation & Properties |
70%
From NCERT
NEET - 2023
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Subtopic: Ethers: Preparation & Properties, Uses |
70%
From NCERT
NEET - 2023
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Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
51%
From NCERT
NEET - 2023
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Subtopic: Alcohols: Preparation & Properties |
69%
From NCERT
NEET - 2023
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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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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
Subtopic: Ethers: Preparation & Properties, Uses |
73%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
Subtopic: Alcohols: Preparation & Properties |
63%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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