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Q. No.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 |
Level 3: 35%-60%
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The nitration of aniline in a strong acidic medium results in the formation of m-nitroaniline because:
| 1. | In spite of substituents, the nitro group always goes to only the m-position. |
| 2. | In electrophilic substitution reactions, the amino group is meta-directive. |
| 3. | In the absence of substituents, the nitro group always goes to only m-position. |
| 4. | In an acidic (strong) medium, aniline is present as an anilinium ion. |
Subtopic: Amines - Preparation & Properties |
73%
Level 2: 60%+
NEET - 2018
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Propanoic acid gives a series of reactions as given below.
The structure of D would be:
1.
2.
3.
4.
Subtopic: Amines - Preparation & Properties |
75%
Level 2: 60%+
AIPMT - 2006
Hints
D is N-methyl aniline in the given below sequence of reaction:
\(\text A\xrightarrow{\bf\text{ reduction }}\text B\xrightarrow{\bf\text {CHCl}_3\text{/KOH}}\text C\xrightarrow{\bf\text{ reduction }}\text D\)
Structure of A can be:
| 1. |  |
2. |  |
| 3. | \(\mathrm{CH_3NH_2 }\) |
4. |  |
Subtopic: Amines - Preparation & Properties |
70%
Level 2: 60%+
AIPMT - 2000
Hints
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%
Level 1: 80%+
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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%
Level 2: 60%+
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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 |
90%
Level 1: 80%+
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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%
Level 3: 35%-60%
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Subtopic: Diazonium Salts: Preparation, Properties & Uses |
66%
Level 2: 60%+
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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%
Level 1: 80%+
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