MCQOPTIONS
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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 is the slowest mode of heat transfer? |
| A. | Conduction |
| B. | Convection |
| C. | Radiation |
| D. | Both radiation and convection |
| Answer» B. Convection | |
| 2. |
According to_________ law, the conductive heat flux is linearly proportional to the temperature gradient. |
| A. | Fourier’s law |
| B. | Pascal law |
| C. | Newton law |
| D. | Stefan-Boltzmann Law |
| Answer» B. Pascal law | |
| 3. |
Is thermal diffusivity and thermal conductivity related? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
What are factors of heat capacity? |
| A. | Heat energy, time |
| B. | Heat energy, temperature |
| C. | Heat energy, temperature, time |
| D. | Temperature, time |
| Answer» C. Heat energy, temperature, time | |
| 5. |
Which law governs the thermal conductivity? |
| A. | Fourier’s law |
| B. | Pascal law |
| C. | Newton law |
| D. | Planks law |
| Answer» B. Pascal law | |
| 6. |
Which of the following example does not explain conduction? |
| A. | The heat from a hot liquid makes the cup itself hot |
| B. | Walking on the beach on a hot summer day will warm the feet |
| C. | A metal spoon becomes hot from the boiling water inside the pot |
| D. | The formation of sea and land breeze |
| Answer» E. | |
| 7. |
Are these statements about the thermal conductivity true?Statement 1: Thermal conductivity is an extrinsic property.Statement 2: It involves in the bulk motion of the molecules during heat transfer. |
| A. | True, False |
| B. | True, True |
| C. | False, True |
| D. | False, False |
| Answer» E. | |
| 8. |
Which of the following is the best insulator? |
| A. | Silica aerogels |
| B. | Manganese aerogels |
| C. | Potassium aerogels |
| D. | Lead aerogels |
| Answer» B. Manganese aerogels | |
| 9. |
Which material has highest thermal conductivity? |
| A. | Diamond |
| B. | Copper |
| C. | Silver |
| D. | Bronze |
| Answer» B. Copper | |
| 10. |
Ice has __________ thermal conductivity than water. |
| A. | lower |
| B. | higher |
| C. | same |
| D. | very lower |
| Answer» C. same | |