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. |
Which of the following apparatus cannot be used for flue gas analysis? |
| A. | Ambler s apparatus |
| B. | Hemple s apparatus |
| C. | Able s apparatus |
| D. | Bunte s apparatus |
| Answer» D. Bunte s apparatus | |
| 2. |
At what temperature does the CO is converted to CO2 in orsat apparatus for analysis of flue gas? |
| A. | 280-295 <sup>0</sup>C |
| B. | 250-265 <sup>0</sup>C |
| C. | 350-365 <sup>0</sup>C |
| D. | Less than 100 <sup>0</sup>C |
| Answer» B. 250-265 <sup>0</sup>C | |
| 3. |
Short orsat apparatus gives more precise results than long orsat in the analysis of flue gas. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
If both CO and O2, both are indicated in the appreciable amount in the flue gas analysis, which type of combustion is seen? |
| A. | Regular and non-uniform combustion |
| B. | Irregular and non-uniform combustion |
| C. | Regular and uniform combustion |
| D. | Irregular and uniform combustion |
| Answer» C. Regular and uniform combustion | |
| 5. |
What happens when too much excess air is supplied to the furnace in the process of combustion of coal? |
| A. | There is a gain in heat in the furnace |
| B. | No change occurs in the furnace |
| C. | There is loss in heat in the furnace |
| D. | The excess air escapes out |
| Answer» D. The excess air escapes out | |
| 6. |
Which of the following compound other than CO2, CO an O2 can be determined by the flue gas analysis? |
| A. | C<sub>2</sub>H<sub>6</sub> |
| B. | C<sub>6</sub>H<sub>6</sub> |
| C. | C<sub>6</sub>H<sub>11</sub>O<sub>22</sub> |
| D. | Ethylene |
| Answer» B. C<sub>6</sub>H<sub>6</sub> | |
| 7. |
What happens when carbon monoxide is obtained in flue gas analysis? |
| A. | Combustion is complete |
| B. | Combustion does not take place |
| C. | Combustion is incomplete |
| D. | It increases the rate of combustion. |
| Answer» D. It increases the rate of combustion. | |
| 8. |
Which of the following is calculated by flue gas analysis? |
| A. | Amount of air used in combustion |
| B. | Rate of combustion |
| C. | Time required for combustion |
| D. | Amount of air present after combustion |
| Answer» B. Rate of combustion | |
| 9. |
Which of the following furnace is best suitable for the efficient combustion of coal? |
| A. | Blast furnace |
| B. | Pudding furnace |
| C. | Open hearth furnace |
| D. | Boiler furnace |
| Answer» E. | |
| 10. |
Which of the following is the correct condition for the efficient combustion of coal? |
| A. | Coal should be of high calorific value |
| B. | Intimate mixing of air with the combustible matter |
| C. | The ignition temperature should be high |
| D. | The volatile matter should be low |
| Answer» C. The ignition temperature should be high | |