MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider three gaseous alkylamines A, B and C or 1°, 2° and 3° respectively. What will be the correct order of their basicity? |
| A. | A > B > C |
| B. | C > B > A |
| C. | B > A > C |
| D. | B > C > A |
| Answer» C. B > A > C | |
| 2. |
If the Kb values of ammonia, methylamine and ethylamine are x, y and z respectively, identify the correct relation between x, y and z from the following. |
| A. | x > y |
| B. | y < z |
| C. | x > z |
| D. | x > y > z |
| Answer» C. x > z | |
| 3. |
If the pKb value of ammonia is 4.75, predict the pKb value of methanamine? |
| A. | 3.38 |
| B. | 4.70 |
| C. | 8.92 |
| D. | 9.38 |
| Answer» B. 4.70 | |
| 4. |
What is the correct order of pKb values of the following amines? |
| A. | Methanamine > Ethanamine > Benzenamine |
| B. | Benzenamine > Ethanamine > Methanamine |
| C. | Ethanamine > Methanamine > Benzenamine |
| D. | Benzenamine > Methanamine > Ethanamine |
| Answer» E. | |
| 5. |
Which of the following is associated with decrease in pKb value of amines? |
| A. | Increase in acidic strength |
| B. | Increase in basic strength |
| C. | Better proton donation |
| D. | Better electron acceptor |
| Answer» C. Better proton donation | |