MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following statements is not true with respect to chemisorption? |
| A. | Depends on nature of adsorbate and adsorbent |
| B. | Has a large heat of adsorption |
| C. | Forms a unimolecular layer |
| D. | Occurs at low temperature |
| Answer» E. | |
| 2. |
Which of the following is an example of sorption? |
| A. | Sponge in water |
| B. | Cotton dipped in ink |
| C. | Water on silica gel |
| D. | Oxygen on metal surface |
| Answer» C. Water on silica gel | |
| 3. |
Which of the following statements is true with respect to the types of adsorption? |
| A. | Chemisorption is stronger than physisorption |
| B. | Physisorption is stronger than chemisorption |
| C. | They are both equal |
| D. | They cannot be compared |
| Answer» B. Physisorption is stronger than chemisorption | |
| 4. |
Which of the following statements is incorrect with respect to physisorption? |
| A. | It is reversible |
| B. | It is spontaneous |
| C. | H < 0 |
| D. | S > 0 |
| Answer» E. | |
| 5. |
Which of the following can result in a transition from physisorption to chemisorption? |
| A. | Decrease in temperature |
| B. | Increase in temperature |
| C. | Decrease in pressure |
| D. | Increase in surface area |
| Answer» C. Decrease in pressure | |
| 6. |
Which of the following statements is true with respect to the extent of physisorption? |
| A. | Increases with increase in temperature |
| B. | Decreases with increase in surface area |
| C. | Decreases with increase in the strength of Van der Waals forces |
| D. | Decreases with increase in temperature |
| Answer» E. | |
| 7. |
In physisorption, the adsorbent does not show specificity towards a particular gas. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following forces is involved in physical adsorption? |
| A. | Gravitational force |
| B. | Magnetic force |
| C. | Van der Waals force |
| D. | Electromagnetic force |
| Answer» D. Electromagnetic force | |
| 9. |
What is the process called when the molecules of a substance are retained at the surface of a solid or a liquid? |
| A. | Absorption |
| B. | Adsorption |
| C. | Sorption |
| D. | Desorption |
| Answer» C. Sorption | |
| 10. |
A finely divided substance is more effective as an adsorbent. |
| A. | True |
| B. | False |
| Answer» B. False | |