MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Food Processing Unit Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following statements about physical absorption are correct?Statement 1: Example for physical absorption is the absorption of carbon dioxide into water.Statement 2: Polar interactions between water and the molecules of the solid play an important role in physical absorption. |
| A. | True, False |
| B. | True, True |
| C. | False, True |
| D. | False, False |
| Answer» C. False, True | |
| 2. |
What is law behind absorption? |
| A. | Nernst’s distribution law |
| B. | Henry’s law |
| C. | Raoult’s law |
| D. | Dalton’s law |
| Answer» B. Henry’s law | |
| 3. |
Which of the following statements about chemical absorption are correct?Statement 1: Chemical reaction between the absorbed and the absorbing substances.Statement 2: Depends upon the stoichiometry of the reaction. |
| A. | True, False |
| B. | True, True |
| C. | False, True |
| D. | False, False |
| Answer» C. False, True | |
| 4. |
Which of the following is not an example for absorption? |
| A. | Reaction of oxygen by fermentation broths |
| B. | Removal of carbon dioxide from water-gas by absorption in water or in solutions of alkalis or amines |
| C. | Reaction of hydrogen by petroleum fractions in processes to remove sulphur as hydrogen sulphide. |
| D. | Liquid ammonium in air |
| Answer» E. | |
| 5. |
Which of the following factors that affect the selection of absorbent? |
| A. | Viscosity should be low |
| B. | Viscosity should be high |
| C. | Low pressure drops |
| D. | Low pressure drops and viscosity should be low |
| Answer» E. | |
| 6. |
What is the principle of absorption spectroscopy? |
| A. | Bound atoms in the ground state can absorb light of a certain wavelength |
| B. | Free atoms in the ground state can absorb light of a certain wavelength |
| C. | Bound atoms in the excited state can absorb light of a certain wavelength |
| D. | Free atoms in the ground state can absorb radiation energy of a certain wavelength |
| Answer» C. Bound atoms in the excited state can absorb light of a certain wavelength | |
| 7. |
Who invented the absorption refrigerator? |
| A. | Albert Einstein |
| B. | Ferdinand Carre |
| C. | Robert Wilhelm Bunsen |
| D. | Schuyler Skaats Wheeler |
| Answer» B. Ferdinand Carre | |
| 8. |
What is reactive absorption? |
| A. | Chemical absorption |
| B. | Physical absorption |
| C. | Microbial absorption |
| D. | Ion absorption |
| Answer» B. Physical absorption | |
| 9. |
What are types of absorption? |
| A. | Physical absorption |
| B. | Chemical absorption |
| C. | Physical absorption and chemical absorption |
| D. | Physical absorption, chemical absorption and microbial absorption |
| Answer» B. Chemical absorption | |
| 10. |
What is the alternative name for stripping? |
| A. | Gas absorption |
| B. | Gas desorption |
| C. | Adsorption |
| D. | Liquid desorption |
| Answer» C. Adsorption | |