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Q. No.The major product Z formed in the following sequence of reactions is:
\(\small[C_2H_6 \xrightarrow[UV\ light]{Cl_2} X \text{ (monochlorinated product)} \xrightarrow{NH_3} Y \xrightarrow[(ii)\ H_2O]{(i)\ NaNO_2,\ HCl} Z\)
\(\small[C_2H_6 \xrightarrow[UV\ light]{Cl_2} X \text{ (monochlorinated product)} \xrightarrow{NH_3} Y \xrightarrow[(ii)\ H_2O]{(i)\ NaNO_2,\ HCl} Z\)
| 1. | \(C_2H_5 - N = N - OH\) |
| 2. | \(C_2H_5O H\) |
| 3. | \(C_2H_5NO_ 2\) |
| 4. | \(C_2H_5NH_2\) |
Subtopic: Diazonium Salts: Preparation, Properties & Uses | Mechanism |
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Select the reagents that reduce nitriles to primary amines:
A. (i) LiAlH4; (ii) H2O
B. Sn + HCl
C. H2/Ni
D. Na(Hg)/C2H5OH
E. Br2/aq. NaOH
Choose the correct answer from the options given below:
1. A, B and C only
2. A, C and D only
3. A, D and E only
4. B, D and E only
A. (i) LiAlH4; (ii) H2O
B. Sn + HCl
C. H2/Ni
D. Na(Hg)/C2H5OH
E. Br2/aq. NaOH
Choose the correct answer from the options given below:
1. A, B and C only
2. A, C and D only
3. A, D and E only
4. B, D and E only
Subtopic: Amines - Preparation & Properties | Cyanides & Isocyanides |
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The following two reactions give the same foul smelling product Z.
X and Z respectively, are
1. \(X = \text{AgCN}; Z = C_2H_5\text{CN}\)
2. \(X = \text{KCN}; Z = C_2H_5\text{CN}\)
3. \(X = \text{KCN}; Z = C_2H_5\text{NC}\)
4. \(X = \text{AgCN}; Z = C_2H_5\text{NC}\)
X and Z respectively, are
1. \(X = \text{AgCN}; Z = C_2H_5\text{CN}\)
2. \(X = \text{KCN}; Z = C_2H_5\text{CN}\)
3. \(X = \text{KCN}; Z = C_2H_5\text{NC}\)
4. \(X = \text{AgCN}; Z = C_2H_5\text{NC}\)
Subtopic: Amines - Preparation & Properties | Identification of Primary, Secondary & Tertiary Amines |
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Subtopic: Amines - Preparation & Properties | Mechanism |
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Given below are two statements :
In light of the above statements, choose the most appropriate answer from the options given below.
| Statement-I: | Oxidation of p-nitrotoluene with acidic KMnO4 gives an acid that is stronger than benzoic acid. |
| Statement-II: | Reduction of p-nitrotoluene with Sn/HCl followed by neutralization gives an amine that is more basic than aniline. |
In light of the above statements, choose the most appropriate answer from the options given below.
| 1. | Statement-I is incorrect but Statement-II is correct. |
| 2. | Both Statement-I and Statement-II are correct. |
| 3. | Both Statement-I and Statement-II are incorrect. |
| 4. | Statement-I is correct but Statement-II is incorrect. |
Subtopic: Amines - Preparation & Properties |
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Identify the reactions which give aniline as the major product.
Choose the correct answer from the options given below.
| A. |  |
| B. |  |
| C. |  |
| D. |  |
Choose the correct answer from the options given below.
| 1. | C and D only | 2. | A and B only |
| 3. | B and D only | 4. | A and C only |
Subtopic: Amines - Preparation & Properties | Cyanides & Isocyanides | Mechanism |
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The correct order of decreasing basic strength of the given amines is:
| 1. | N-ethylethanamine > ethanamine > N -methylaniline > benzenamine |
| 2. | benzenamine > ethanamine > N -methylaniline >N-ethylethanamine |
| 3. | N -methylaniline > benzenamine > ethanamine >N-ethylethanamine |
| 4. | N-ethylethanamine > ethanamine > benzenamine >N-methylaniline |
Subtopic: Amines - Preparation & Properties |
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Given below are two statements:
| Statement I: | Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at \(273-278~ \text{K}.\) It decomposes easily in the dry state. |
| Statement II: | Insertion of iodine into the benzene ring is difficult, and hence iodobenzene is prepared through the reaction of benzenediazonium salt with \(KI.\) |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Diazonium Salts: Preparation, Properties & Uses |
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Given below are two statements:
| Statement I: | Aniline does not undergo Friedel-Crafts alkylation reaction. |
| Statement II: | Aniline cannot be prepared through Gabriel synthesis. |
| 1. | Both Statement I and Statement II are incorrect. |
| 2. | Statement I is correct and Statement II is incorrect. |
| 3. | Statement I is incorrect and Statement II is correct. |
| 4. | Both Statement I and Statement II are correct. |
Subtopic: Amines - Preparation & Properties | Identification of Primary, Secondary & Tertiary Amines |
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Identify the major product C formed in the following reaction sequence:
| 1. | Butylamine | 2. | Butanamide |
| 3. | \(\alpha-\) Bromobutanoic acid | 4. | Propylamine |
Subtopic: Amines - Preparation & Properties |
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