MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The preparation of diazonium salts from primary aromatic amines is known as ______ |
| A. | acylation |
| B. | alkylation |
| C. | benzonation |
| D. | diazotisation |
| Answer» E. | |
| 2. |
Aliphatic diazonium salts are highly unstable. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Why is the reason for the stability of aromatic diazonium salts? |
| A. | Dispersal of negative charge over the benzene ring |
| B. | Dispersal of positive charge over benzene ring |
| C. | Bond between diazonium group and anion |
| D. | High electronegativity of anion compared to the N atom |
| Answer» C. Bond between diazonium group and anion | |
| 4. |
Identify the reagent ‘X’ in the following reaction. |
| A. | HNO3 |
| B. | NaNO2 and HCl |
| C. | NaCl and HNO3 |
| D. | NaNO2 and H2SO4 |
| Answer» C. NaCl and HNO3 | |
| 5. |
What is the correct name of the compound C6H5N2+HSO4–? |
| A. | Benzenediazonium hydrogensulphate |
| B. | Benzenehygrogensulphate diazonium |
| C. | Diazonium benzenehydrogensulphate |
| D. | Hydrogensulphate diazoniumbenzene |
| Answer» B. Benzenehygrogensulphate diazonium | |
| 6. |
Identify the diazonium group in the diazonium salt ArN2+Br-. |
| A. | ArN2+ |
| B. | N2+Br– |
| C. | N2+ |
| D. | ArN2Br |
| Answer» D. ArN2Br | |
| 7. |
What is the most suitable temperature for the diazotisation reaction to take place? |
| A. | 0°C |
| B. | 10°C |
| C. | 22°C |
| D. | 30°C |
| Answer» B. 10°C | |