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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Arrange the following in increasing order of boiling point with explanation: C2H5OH, (CH3)2NH, C2H5NH2 |
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Answer» (CH3)2NH < C2H5NH2< C2H5OH, with increasing hydrogen bonding. |
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| 2. |
It is difficult to prepare pure amines by ammonolysis of alkylhalides. |
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Answer» The process of ammonolysis yields a mixture of primary, secondary, tertiary amines and quaternary salts. The separation of this amines is a very complicated process and difficult. Therefore it is difficult to prepare pure amines by ammonolysis of alkyl halides. |
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| 3. |
Benzenediazonium salt is more stable than primary aliphatic diazonium salt. Why? |
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Answer» The stability of arenediazonium is due to the resonance of diazo group with benzene ring. |
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| 4. |
Write chemical equations for reaction of ethanolic NH3 with C2H5Cl. |
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Answer» C2H5Cl + NH3→C2H5NH2 + HCl |
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| 5. |
Write the reactivity order of alkyl halide for ammonolysis. |
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Answer» The order of reactivity is RI >RBr>RCl> RF. |
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| 6. |
What is diazotization? |
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Answer» The conversion of primary aromatic amines into diazonium salts in presence of nitrous acid at 273-278K is known as diazotisation. |
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| 7. |
Why benzenediazonium salt is stored at very low temperature? |
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Answer» This is because benzenediazonium salt is stable in cold but it decomposes easily in the dry state on little warming. |
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