MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Dairy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which evaporators can be used when a low degree of concentration is required? |
| A. | Falling film evaporator |
| B. | Circular type evaporator |
| C. | Tubular type evaporator |
| D. | Plate type evaporator |
| Answer» C. Tubular type evaporator | |
| 2. |
Evaporation in dairy industry is done under __________ |
| A. | Vacuum |
| B. | Heater |
| C. | Dryer |
| D. | Pasteurizer |
| Answer» B. Heater | |
| 3. |
Evaporation in dairy industry is a preliminary step to which of the following process? |
| A. | Drying |
| B. | Flavoring |
| C. | Watering |
| D. | Pasteurization |
| Answer» B. Flavoring | |
| 4. |
Which of the following is not the reason for the concentration of food liquids? |
| A. | reduce the cost of drying |
| B. | induce crystallization |
| C. | reduce costs for storage and transportation |
| D. | increase water activity in order to increase microbiological and chemical |
| Answer» E. | |
| 5. |
Concentration is different than drying. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Crystallization, evaporation and distillation are a means of? |
| A. | separating soluble substances in solution |
| B. | separating insoluble substances in solutions |
| C. | separating filtrate from solution |
| D. | concentration |
| Answer» B. separating insoluble substances in solutions | |
| 7. |
Evaporation of solution of CuSO4 helps in? |
| A. | making it concentrated |
| B. | crystallization of CuSO4 |
| C. | evaporation of salt CuSO4 |
| D. | concentration and crystallization |
| Answer» E. | |
| 8. |
When heating begins in miscible solutions, vapors formed will be? |
| A. | of liquid lower in boiling point |
| B. | of liquid higher in boiling point |
| C. | vapors will be of both liquids with a higher concentration of liquid having low boiling point |
| D. | collected in a gas syringe |
| Answer» D. collected in a gas syringe | |
| 9. |
Compounds evaporating easily and giving off a smell are? |
| A. | ionic compounds |
| B. | covalent bonds |
| C. | metallic bonds |
| D. | dative bonds |
| Answer» C. metallic bonds | |
| 10. |
Evaporation occurs only _____ |
| A. | after boiling |
| B. | after extreme cooling |
| C. | at surface of a liquid |
| D. | if boiling occurs at atmospheric pressure |
| Answer» D. if boiling occurs at atmospheric pressure | |
| 11. |
Which of the following factors do not affect the rate of evaporation? |
| A. | Temperature of liquid |
| B. | Humidity of surrounding air |
| C. | Depth of liquid |
| D. | Surface of liquid |
| Answer» D. Surface of liquid | |
| 12. |
Rate of evaporation decreases as? |
| A. | temperature increases |
| B. | humidity of surrounding air increases |
| C. | movement of air above surface of liquid increases |
| D. | atmospheric pressure decreases |
| Answer» C. movement of air above surface of liquid increases | |
| 13. |
Rate of evaporation increases as? |
| A. | exposed surface area of liquid increases |
| B. | exposed surface area of liquid decreases |
| C. | movement of air above surface of liquid decreases |
| D. | atmospheric pressure increases |
| Answer» C. movement of air above surface of liquid decreases | |
| 14. |
Rate of evaporation is______ |
| A. | directly proportional to temperature of liquid |
| B. | inversely proportional to temperature of liquid |
| C. | independent of temperature of liquid |
| D. | directly proportional to humidity of surrounding air |
| Answer» B. inversely proportional to temperature of liquid | |
| 15. |
Statement related to the process of evaporation that is incorrect is? |
| A. | Evaporation occurs at any temperature |
| B. | Evaporation takes place within liquid |
| C. | Temperature may change during evaporation |
| D. | No bubbles are formed in liquid during evaporation |
| Answer» C. Temperature may change during evaporation | |