Q. No.Match List-I with List-II:
Choose the correct answer from the options given below
1. A - I, B - III, C -IV, D - II
2. A - II, B - IV, C - III, D - I
3. A - II, B - III, C - I, D - IV
4. A - II, B - III, C - IV, D - I
| List-I | List-II | ||
| A. |  |
I. | (i) Oleum; (ii) NaOH, \(\Delta\); (iii) \(H^+\) |
| B. |  |
II. | (i) \(O_2\); (ii) \(H_2O/H^+\) |
| C. |  |
III. | (i) \(CH_3OH, H^+; \) (ii) \(H_2, \text{catalyst}\) |
| D. |  |
IV | (i) Conc. \(H_2SO_4, \Delta;\) (ii) \(H^+/H_2O\) |
1. A - I, B - III, C -IV, D - II
2. A - II, B - IV, C - III, D - I
3. A - II, B - III, C - I, D - IV
4. A - II, B - III, C - IV, D - I
Subtopic: Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol | Phenols: Preparation & Properties |
57%
Level 3: 35%-60%
NEET - 2026
Please attempt this question first.
Hints
Please attempt this question first.
Identify the correct reagents that would bring about the following transformation.
| 1. | \(\text { (i) } \mathrm{BH}_3\) | 2. | \(\text { (i) } \mathrm{BH}_3\) |
| \((ii) \mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{OH}}\) | \((ii) \mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{OH}}\) | ||
| \(\text { (iii) } \mathrm{P C C}\) | \(\text { (iii) alk. } \mathrm{KMnO}_4\) | ||
| \(\text { (iv) } \mathrm{H}_3 \mathrm{O}^{+}\) | |||
| 3. | \(\text { (i) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}\) | 4. | \(\text { (i) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}\) |
| \(\text { (ii) } \mathrm{P C C}\) | \(\text { (ii) } \mathrm{CrO}_3\) |
Subtopic: Alcohols: Preparation & Properties |
62%
Level 2: 60%+
NEET - 2024
Hints
Which one of the following alcohols reacts instantaneously with Lucas reagent?
| 1. |  |
| 2. |  |
| 3. |  |
| 4. | \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}\) |
Subtopic: Alcohols: Preparation & Properties |
81%
Level 1: 80%+
NEET - 2024
Hints
Identify D in the following sequence of reactions:
| 1. | n-Propyl alcohol | 2. | Isopropyl alcohol |
| 3. | Propanal | 4. | Propionic acid |
Subtopic: Alcohols: Preparation & Properties |
64%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: Alcohols: Preparation & Properties |
72%
Level 2: 60%+
NEET - 2023
Hints
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 |
72%
Level 2: 60%+
NEET - 2023
Hints
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 |
51%
Level 3: 35%-60%
NEET - 2023
Hints
Subtopic: Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
65%
Level 2: 60%+
NEET - 2023
Hints
Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Lucas reagent, a mixture of concentrated HCl and anhydrous ZnCl₂, is used to distinguish primary, secondary, and tertiary alcohols based on their reactivity. |
| 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 are correct |
| 3. | Both I and II are incorrect |
| 4. | I is correct, but II is incorrect |
Subtopic: Alcohols: Preparation & Properties |
82%
Level 1: 80%+
NEET - 2022
Hints
Subtopic: Alcohols: Preparation & Properties |
64%
Level 2: 60%+
NEET - 2022
Hints
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