MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the pKb value of p-nitroaniline is 13, predict the pKb value of its ortho isomer? |
| A. | 9.38 |
| B. | 11.54 |
| C. | 13 |
| D. | 14.22 |
| Answer» E. | |
| 2. |
If ‘a’ is the pKb value of aniline and ‘b’, ‘c’ and ‘d’ are the pKb values of o-, m- and p- isomers of methylaniline respectively, what is the correct order of the values a, b, c and d? |
| A. | a > b > c > d |
| B. | d > c > a > b |
| C. | d > c > b > a |
| D. | b > a > c > d |
| Answer» E. | |
| 3. |
Which of the following will have the highest pKb value? |
| A. | C6H5NH2 |
| B. | p-C6H5(CH3)NH2 |
| C. | p-C6H5(OCH3)NH2 |
| D. | p-C6H5(NH2)NH2 |
| Answer» B. p-C6H5(CH3)NH2 | |
| 4. |
Identify X if the shown compound has a higher pKb value than aniline. |
| A. | OH |
| B. | CH3 |
| C. | NH2 |
| D. | Cl |
| Answer» E. | |
| 5. |
Which of the following aromatic amines has lower pKb value than ammonia? |
| A. | Benzylamine |
| B. | Benzenamine |
| C. | N-Methylbenzenamine |
| D. | N,N-Dimethylbenzenamine |
| Answer» B. Benzenamine | |
| 6. |
If the pKb value of N,N-diethylethanamine is 3.25, predict the pKb value of ethanamine. |
| A. | 3.00 |
| B. | 3.29 |
| C. | 4.75 |
| D. | 9.38 |
| Answer» C. 4.75 | |
| 7. |
If p, q and r are the pKb values of methylamine, N-methylamine and N,N-dimethylamine respectively, what is the correct order of p, q and r? |
| A. | p > q > r |
| B. | r > q > p |
| C. | q > p > r |
| D. | r > p > q |
| Answer» E. | |