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Q. No.Among the given reactions, which one does not result in the formation of a primary amine as the product?
1.
2.
3.
4.
Subtopic: Amines - Preparation & Properties |
75%
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NEET - 2023
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| Assertion (A): | Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl. |
| Reason (R): | With Fe, only a small amount of HCl is required to initiate the reaction, as FeCl2 formed gets hydrolyzed to release hydrochloric 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. | Both (A) and (R) are False. |
Subtopic: Amines - Preparation & Properties |
91%
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| Assertion (A): | Primary aliphatic amines react with nitrous acid and liberate nitrogen gas quantitatively. |
| Reason (R): | The quantitative evolution of nitrogen is used in the estimation of amino acids and proteins. |
| 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: Amines - Preparation & Properties |
53%
From NCERT
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The IUPAC name of the compound resulting from the reaction between methylamine and two equivalents of ethyl chloride is:
1. N,N-Dimethylethanamine
2. N,N-Diethylmethanamine
3. N-Methyl ethanamine
4. N-Ethyl-N-methylethanamine
1. N,N-Dimethylethanamine
2. N,N-Diethylmethanamine
3. N-Methyl ethanamine
4. N-Ethyl-N-methylethanamine
Subtopic: Amines - Preparation & Properties |
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| Statement I: | Quaternary amine is obtained as a major product when alkyl halide reacts with a large excess of ammonia. |
| Statement II: | Aliphatic and aromatic primary and secondary amines react with acid chlorides, anhydrides, and esters by nucleophilic addition reactions. This reaction is known as acylation. |
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Identification of Primary, Secondary & Tertiary Amines |
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Match the reaction given in column I with their names given in column II and mark the appropriate option.
1. a(i), b(iii), c(ii), d(iv)
2. a(iii), b(i), c(iv), d(ii)
3. a(iii), b(i), c(ii), d(iv)
4. a(i), b(iii), c(iv), d(ii)
| Column I | Column II | ||
| a. |  |
(i) | Carbylamine reaction |
| b. |  |
(ii) | Gatterman reaction |
| c. |  |
(iii) | Hoffmann Bromamide degradation reaction |
| d. |  |
(iv) | Sandmeyer reaction |
1. a(i), b(iii), c(ii), d(iv)
2. a(iii), b(i), c(iv), d(ii)
3. a(iii), b(i), c(ii), d(iv)
4. a(i), b(iii), c(iv), d(ii)
Subtopic: Amines - Preparation & Properties |
85%
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Which of the following compound(s) give(s) a foul-smelling substance on heating with chloroform and ethanolic potassium hydroxide?
1. l only
2. l and ll only
3. l and lll only
4. l, ll, and lll
| I. |  |
| II. | \(\mathrm{(CH_3)_2NH }\) |
| III. |  |
2. l and ll only
3. l and lll only
4. l, ll, and lll
Subtopic: Identification of Primary, Secondary & Tertiary Amines |
65%
From NCERT
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Zwitter ion is formed when aniline is treated with:
| 1. | Acetic anhydride in pyridine. |
| 2. | A mixture of nitric acid and sulphuric acid at low temperatures. |
| 3. | Conc. sulphuric acid followed by heating at 200°C. |
| 4. | Conc. nitric acid at high temperature. |
Subtopic: Mechanism |
61%
From NCERT
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The order of reactivity of alkyl halides (RCl, RBr, RI) with aliphatic amines is:
1. \(RCl > RI > RBr \)
2. \( RBr > RCl > RI \)
3. \(RI > RBr > RCl \)
4. \(RI > RCl > RBr \)
1. \(RCl > RI > RBr \)
2. \( RBr > RCl > RI \)
3. \(RI > RBr > RCl \)
4. \(RI > RCl > RBr \)
Subtopic: Mechanism |
87%
From NCERT
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Match column I (Reaction) with column II (Product formed) and mark the appropriate choice:
| Column - I (Reaction) |
Column - II (Product formed) |
||
| (a) | Gabriel synthesis | (i) | Benzaldehyde |
| (b) | Kolbe synthesis | (ii) | Ethers |
| (c) | Williamson synthesis | (iii) | Primary amines |
| (d) | Etard reaction | (iv) | Salicylic acid |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (ii) | (iv) |
| 2. | (ii) | (iii) | (i) | (iv) |
| 3. | (iv) | (iii) | (i) | (ii) |
| 4. | (iii) | (iv) | (ii) | (i) |
Subtopic: Amines - Preparation & Properties |
82%
From NCERT
NEET - 2022
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