MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
High temperature carbonisation process is used to produce ______________ |
| A. | Brown coal |
| B. | Gas coke |
| C. | Coal tar |
| D. | Coal gas |
| Answer» C. Coal tar | |
| 2. |
How much yield of coke is produced in low temperature carbonisation? |
| A. | 75-80 % |
| B. | 60-70 % |
| C. | 100 % |
| D. | 85-90% |
| Answer» B. 60-70 % | |
| 3. |
What is done when the coke is too friable for use in carbonisation process? |
| A. | It is divided into small pieces |
| B. | Its maturity is made decreased |
| C. | The ash content is reduced |
| D. | It is pulverised |
| Answer» E. | |
| 4. |
Which type of carbonisation method is used for obtaining particular types of by-products? |
| A. | High temperature carbonisation |
| B. | Medium temperature carbonisation |
| C. | Low temperature carbonisation |
| D. | No by-products are formed |
| Answer» C. Low temperature carbonisation | |
| 5. |
In which type of plant does the carbonisation process is done? |
| A. | Thermal power plant |
| B. | Blast furnace process |
| C. | Coke-ovens |
| D. | Destructive distillation plant |
| Answer» D. Destructive distillation plant | |
| 6. |
Which of the following coals have high rates of carbonisation? |
| A. | Non-caking coal |
| B. | Caking coal |
| C. | Coking coal |
| D. | Non-coking coal |
| Answer» B. Caking coal | |
| 7. |
Which of the following forms a heat barrier in the process of carbonisation? |
| A. | Impurities present in the coal |
| B. | Moisture present in the coal |
| C. | Different structure of the machine |
| D. | Thin plastic zone formed by caking coal |
| Answer» E. | |
| 8. |
Coal is a good conductor of heat and electricity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
What happens when coal is expanded during the plastic stage of caking? |
| A. | Closed texture coke is obtained |
| B. | Highly swollen open texture coke is obtained |
| C. | There is no change in the coal |
| D. | Coal breaks into a number of pieces |
| Answer» C. There is no change in the coal | |
| 10. |
At what temperature does the H2S and olefin gases are evolved in the process of carbonisation? |
| A. | 700<sup>o</sup>C |
| B. | 450<sup>o</sup>C |
| C. | 270<sup>o</sup>C |
| D. | 110<sup>o</sup>C |
| Answer» D. 110<sup>o</sup>C | |