- 1(current)
Q. No.The final product C in the below mentioned reaction is:
\(\xrightarrow[]{Ac_2O}\ A\ \xrightarrow[CH_3COOH]{Br_2}\ B\ \xrightarrow[H^+]{H_2O}\ C\)
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Mechanism |
65%
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Match the reactions given in Column-I with the statements given in Column-II.
| Column-I | Column-II | ||
| A. | Ammonolysis | (i) | Amine with a lesser number of carbon atoms |
| B. | Gabriel phthalimide synthesis | (ii) | Detection test for primary amines. |
| C. | Hofmann bromamide reaction | (iii) | Reaction of phthalimide with KOH and R—X |
| D. | Carbylamine reaction | (iv) | Reaction of alkyl halides with NH3 |
Codes:
| A | B | C | D | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iv) | (iii) | (i) | (ii) |
Subtopic: Diazonium Salts: Preparation, Properties & Uses | Mechanism |
89%
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The compound that does not undergo Friedel-Crafts alkylation reaction but gives a positive carbylamine test is:
1. Aniline
2. Pyridine
3. N-Methylaniline
4. Triethylamine
Subtopic: Mechanism |
84%
From NCERT
NEET - 2024
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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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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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| Assertion (A): | Anilinium hydrogen sulphate, on heating, forms meta-aminobenzene sulfonic acid. |
| Reason (R): | The sulfonic acid group is an electron-donating group. |
| 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 a true statement but (R) is false. |
| 4. | Both (A) and (R) are false statements. |
Subtopic: Mechanism |
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Q. No.
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