MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The reaction of HNO2 with ‘A’ gives quaternary ammonium salt. A is which of the following? |
| A. | Methyl amine |
| B. | Dimethyl amine |
| C. | Trimethyl amine |
| D. | Aniline |
| Answer» D. Aniline | |
| 2. |
Primary amines react with nitrous acid to yield which of the following? |
| A. | Insoluble nitrite salts |
| B. | Yellow oily layer |
| C. | Nitrogen gas |
| D. | Azo dye |
| Answer» D. Azo dye | |
| 3. |
When an organic compound was treated with sodium nitrite and hydrochloric acid in the ice cold, nitrogen gas was evolved copiously. What is the compound? |
| A. | A nitrocompound |
| B. | A primary amine |
| C. | An aliphatic primary amine |
| D. | An aromatic primary amine |
| Answer» D. An aromatic primary amine | |
| 4. |
Aniline on treatment with excess of bromine water which of the following? |
| A. | Aniline bromide |
| B. | o-bromoaniline |
| C. | p-bromoaniline |
| D. | 2, 4, 6-tribromoaniline |
| Answer» E. | |
| 5. |
The compound which on reaction with aqueous nitrous acid on HNO2 at low temperature produces an oily nitrosoamine is which of the following? |
| A. | Diethylamine |
| B. | Ethylamine |
| C. | Aniline |
| D. | Methylamine |
| Answer» B. Ethylamine | |
| 6. |
When chloroform reacts with ethyl amine in presence of alcoholic KOH, the compound formed is which of the following? |
| A. | Ethyl cyanide |
| B. | Ethyl isocyanide |
| C. | Formic acid |
| D. | An amide |
| Answer» C. Formic acid | |
| 7. |
Primary amines can be distinguished from secondary and tertiary amines by reacting with which of the following? |
| A. | Chloroform and alcoholic KOH |
| B. | Methyl iodide |
| C. | Chloroform alone |
| D. | Zinc dust |
| Answer» B. Methyl iodide | |
| 8. |
When primary amines are treated with HCl, the product obtained is which of the following? |
| A. | An alcohol |
| B. | A cyanide |
| C. | An amide |
| D. | Ammonium salt |
| Answer» E. | |
| 9. |
Reaction of primary amines with aldehyde yields which of the following compound? |
| A. | Amides |
| B. | Aldimines |
| C. | Nitriles |
| D. | Nitro compounds |
| Answer» C. Nitriles | |
| 10. |
Ethyl amine undergoes oxidation in the presence of KMnO4 to form which compound? |
| A. | An acid |
| B. | An alcohol |
| C. | An aldehyde |
| D. | A nitrogen oxide |
| Answer» D. A nitrogen oxide | |
| 11. |
Nitroso amines (R2N−N=O) are soluble in water. On heating them with concentrated H2SO4 they give secondary amines. What is this reaction called as? |
| A. | Perkin’s reaction |
| B. | Fittig’s reaction |
| C. | Sandmeyer’s reaction |
| D. | Liebermann’s nitroso reaction |
| Answer» E. | |
| 12. |
p-chloroaniline and anilinium hydrochloride can be distinguished by which test? |
| A. | Sandmeyer reaction |
| B. | NaHCO3 |
| C. | AgNO3 |
| D. | Carbylamine test |
| Answer» C. AgNO3 | |
| 13. |
Aniline reacts with acetaldehyde to form which of the following? |
| A. | Schiff’s base |
| B. | Carbylamine |
| C. | Immine |
| D. | Diazonium salt |
| Answer» D. Diazonium salt | |
| 14. |
The action of nitrous acid on ethyl amine gives which of the following? |
| A. | Ethane |
| B. | Ammonia |
| C. | Ethyl acohol |
| D. | Nitroethane |
| Answer» D. Nitroethane | |
| 15. |
Which of the following is converted into an alcohol on treatment with HNO2? |
| A. | Methyl amine |
| B. | Aniline |
| C. | Dimethyl amine |
| D. | Triethyl amine |
| Answer» B. Aniline | |