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Q. No.
Subtopic: Amines - Preparation & Properties |
66%
From NCERT
NEET - 2023
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Subtopic: Diazonium Salts: Preparation, Properties & Uses |
From NCERT
NEET - 2023
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Subtopic: Amines - Preparation & Properties |
NEET - 2023
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Choose the correct sequence of reagents in the conversion of 4-nitrotoluene to 2-bromotoluene.
1. NaNO2/HCl; Sn/HCl; Br2; H2O/H3PO2
2. Sn/HCl ; NaNO2/HCl; Br2;H2O/H3PO2
3. Br2;Sn/HCl;NaNO2/HCl;H2O/H3PO2
4. Sn/HCl;Br2;NaNO2/HCl;H2O/H3PO2
1. NaNO2/HCl; Sn/HCl; Br2; H2O/H3PO2
2. Sn/HCl ; NaNO2/HCl; Br2;H2O/H3PO2
3. Br2;Sn/HCl;NaNO2/HCl;H2O/H3PO2
4. Sn/HCl;Br2;NaNO2/HCl;H2O/H3PO2
Subtopic: Diazonium Salts: Preparation, Properties & Uses |
From NCERT
NEET - 2023
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| I | Primary aliphatic amines react with HNO2 to give unstable diazonium salts. |
| II | Primary aromatic amines react with HNO2 to form diazonium salts which are stable even above 300 K. |
| 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: Diazonium Salts: Preparation, Properties & Uses |
From NCERT
NEET - 2022
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Subtopic: Diazonium Salts: Preparation, Properties & Uses | Mechanism |
70%
From NCERT
NEET - 2022
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Match list-I with list-II:
| List-I (Amines) | List-II (pKb values) | ||
| (a) | N-methylmethanamine | (i) | 9.30 |
| (b) | Ammonia | (ii) | 9.38 |
| (c) | N-methylaniline | (iii) | 4.75 |
| (d) | Benzenamine | (iv) | 3.27 |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (ii) | (i) | (iii) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (i) | (iv) | (iii) | (ii) |
Subtopic: Amines - Preparation & Properties |
65%
From NCERT
NEET - 2022
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Subtopic: Amines - Preparation & Properties |
64%
From NCERT
NEET - 2022
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Match List - I with List - II :
Choose the correct answer from the options given below:
| List - I (Reaction) |
List - 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 |
77%
From NCERT
NEET - 2022
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Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Identification of Primary, Secondary & Tertiary Amines |
76%
From NCERT
NEET - 2021
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