MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Aniline on carbylamines test gives an unpleasant foul odour. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following compounds is not formed during the heating of ethylamine with chloroform in ethanolic KOH? |
| A. | Propanenitrile |
| B. | Ethyl isocyanide |
| C. | Potassium chloride |
| D. | Water |
| Answer» B. Ethyl isocyanide | |
| 3. |
A certain amine X when heated with chloroform and alcoholic KOH, produced no reaction. Identify X from the following. |
| A. | Methylamine |
| B. | Ethylamine |
| C. | Ethylmethylamine |
| D. | Aniline |
| Answer» D. Aniline | |
| 4. |
Which of the following amines does not undergo benzoylation? |
| A. | N-Methylethanamine |
| B. | N-Ethylethanamine |
| C. | N,N-Dimethylethanamine |
| D. | N-Methylbenzenamine |
| Answer» D. N-Methylbenzenamine | |
| 5. |
What is the product of the benzoylation of aniline in the presence of aqueous NaOH? |
| A. | N-Ethylethanamide |
| B. | N-Ethylbenzamide |
| C. | N-Phenylethanamide |
| D. | N-Phenylbenzamide |
| Answer» E. | |
| 6. |
What are the products formed from the reaction between aniline and ethanoic anhydride? |
| A. | N-Phenylethanamide and hydrochloric acid |
| B. | N-Phenylethanamide and acetic acid |
| C. | N-Methylbenzamide and acetic acid |
| D. | N-Methylbenzamide and hydrochloric acid |
| Answer» C. N-Methylbenzamide and acetic acid | |
| 7. |
The reaction between ethanamine and acetyl chloride will give N-ethylethanamide only in the presence of a strong base, like pyridine. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following is formed from the reaction between RNHR and R OCl, where R, R and R are three different alkyl groups? |
| A. | RNR COR |
| B. | R<sub>2</sub>NCOR |
| C. | R <sub>2</sub>NCOR |
| D. | R NR COR |
| Answer» B. R<sub>2</sub>NCOR | |
| 9. |
During the acylation of an aliphatic primary amine, which of the following is replaced by an acyl group? |
| A. | NH<sub>2</sub> group |
| B. | One H atom of NH<sub>2</sub> |
| C. | Both H atoms of NH<sub>2</sub> |
| D. | Alkyl group of the amine |
| Answer» C. Both H atoms of NH<sub>2</sub> | |
| 10. |
The alkylation of amines with alkyl halides is carried out in the presence of which of the following? |
| A. | Alcohol |
| B. | Acid |
| C. | Base |
| D. | LiAlH<sub>4</sub> |
| Answer» D. LiAlH<sub>4</sub> | |
| 11. |
Which of the following is not a likely product of the alkylation of amines with methyl iodide? |
| A. | Primary amine |
| B. | Secondary amine |
| C. | Tertiary amine |
| D. | Quaternary ammonium salt |
| Answer» B. Secondary amine | |
| 12. |
Alkylation of amines with alkyl halides proceeds by _________ |
| A. | electrophilic addition |
| B. | electrophilic substitution |
| C. | nucleophilic addition |
| D. | nucleophilic substitution |
| Answer» E. | |
| 13. |
What is the correct order of basic strength of the following compounds? |
| A. | Aniline > Diphenylaniline > Triphenylaniline |
| B. | Aniline > Triphenylaniline > Diphenylaniline |
| C. | Diphenylaniline > Triphenylaniline > Aniline |
| D. | Triphenylaniline > Diphenylaniline > Aniline |
| Answer» B. Aniline > Triphenylaniline > Diphenylaniline | |
| 14. |
If x and y are the pKb values of p-methylaniline and N,N-dimethylaniline, what is the relation between x and y? |
| A. | x > y |
| B. | x < y |
| C. | x = y |
| D. | x >> y |
| Answer» B. x < y | |