MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Statement 1: Batch crystallizers are used for jaggery.Statement 2: Particle size is controlled by stirring and scraping the concentrate from the vessel for better heat transfer. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 2. |
Statement 1: Batch crystallizers use the concept of cooling of hot solution/magma.Statement 2: Control of particle size is poor in a batch crystallizer. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 3. |
Statement 1: Batch crystallizers are used if the throughput is high.Statement 2: The operating cost of batch crystallizers is high. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» E. | |
| 4. |
Which of the following facilitates crystallization? |
| A. | Hot concentrated solution is cooled for crystals to form |
| B. | Solution is concentrated by evaporation |
| C. | Adiabatic evaporation and cooling |
| D. | All of the mentioned |
| Answer» E. | |
| 5. |
Parameters affecting crystallization are ____________ |
| A. | Agitator speed |
| B. | Population density |
| C. | Purity of solution |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
The ratio of concentration of a super saturated solution to a saturated solution is denoted by which is stated by the Kelvin equation. How is it related to the crystal size and interfacial tension between solid and liquid? |
| A. | Directly, indirectly |
| B. | Indirectly, directly |
| C. | Directly, directly |
| D. | Indirectly, indirectly |
| Answer» C. Directly, directly | |
| 7. |
Statement 1: Smaller particles dissolve as they have a larger surface area and larger particles grow.Statement 2: The above process is called Ostwald ripening. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 8. |
Statement 1: Crystallization is both a mass and heat transfer operation.Statement 2: The crystals and mother liquor obtained from a crystallizer are called _____ |
| A. | True, nucleation |
| B. | False, solid residue |
| C. | True, magma |
| D. | False, crystal growth |
| Answer» D. False, crystal growth | |
| 9. |
Statement 1: Solid food items containing water molecules are more soluble as the temperature increases.Statement 2: This growth takes place in steps. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 10. |
Statement 1: The solubility of NaCl increases with the increase in temperature.Statement 2: Crystal formation is hindered by nucleation taking place on the crystal surface. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |