MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
The presence of CF3 group in an acid gives a higher acidic strength compared to the presence of NO2. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
What is the correct order of pKa values of the following acids? |
| A. | Benzoic acid > m-Nitrobenzoic acid > p-Nitrobenzoic acid |
| B. | Benzoic acid > p-Nitrobenzoic acid > m-Nitrobenzoic acid |
| C. | p-Nitrobenzoic acid > m-Nitrobenzoic acid > Benzoic acid |
| D. | m-Nitrobenzoic acid > p-Nitrobenzoic acid > Benzoic acid |
| Answer» B. Benzoic acid > p-Nitrobenzoic acid > m-Nitrobenzoic acid | |
| 3. |
It is given that the following compound has a higher pKa value than benzoic acid. Which is the most probable substituent group X of the compound? |
| A. | OH |
| B. | Cl |
| C. | CN |
| D. | NO2 |
| Answer» B. Cl | |
| 4. |
Which of the following has the highest pKa value? |
| A. | Bromoacetic acid |
| B. | Chloroacetic acid |
| C. | Fluoroacetic acid |
| D. | Iodoacetic acid |
| Answer» E. | |
| 5. |
What is the relation between the acidic strength of A and B? |
| A. | A = B |
| B. | A > B |
| C. | A < B |
| D. | A >> B |
| Answer» D. A >> B | |
| 6. |
If the pKa value of acetic acid is 4.76, predict the pKa value of HCl. |
| A. | -7 |
| B. | 4.2 |
| C. | 7 |
| D. | 10 |
| Answer» B. 4.2 | |
| 7. |
The pKa value is equivalent to ________ |
| A. | logKa |
| B. | -logKa |
| C. | logKeq |
| D. | -logKeq |
| Answer» C. logKeq | |
| 8. |
The reaction of carboxylic acids with NaHCO3 produces ______ which helps it to differentiate it from phenols. |
| A. | H2O |
| B. | CO |
| C. | CO2 |
| D. | NaCl |
| Answer» D. NaCl | |