MCQOPTIONS
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MCQOPTIONS
This section includes 408 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
A coal having high amount of volatile matter____________________? |
| A. | Would require smaller combustion chamber |
| B. | Produces very little of tar and gas on carbonisation |
| C. | Ignites easily and burns with long smoky flame |
| D. | All A., B. and C. |
| Answer» E. | |
| 402. |
A coal containing very high percentage of durain is called ______________ coal? |
| A. | Bright |
| B. | Splint |
| C. | Non-banded |
| D. | Boghead |
| Answer» C. Non-banded | |
| 403. |
A coal gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having _____________________? |
| A. | Higher methane content and thus higher calorific value |
| B. | Higher carbon monoxide content |
| C. | Lower carbon dioxide content |
| D. | None of these |
| Answer» B. Higher carbon monoxide content | |
| 404. |
A coal containing high amount of volatile matter will have__________________? |
| A. | Low ignition temperature |
| B. | Very little ash content |
| C. | High fusion point of its ash |
| D. | Low adiabatic flame temperature |
| Answer» B. Very little ash content | |
| 405. |
A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the ‘carpet loss’. The carpet loss may be of the order of ______________ cms? |
| A. | 1 to 2 |
| B. | 3 to 4 |
| C. | 5 to 15 |
| D. | 20 to 4 |
| Answer» D. 20 to 4 | |
| 406. |
A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that___________________? |
| A. | 21% excess air has been used for combustion |
| B. | 21% excess oxygen has been used for combustion |
| C. | Complete combustion of fuel has taken place |
| D. | No excess air has been used for combustion |
| Answer» D. No excess air has been used for combustion | |
| 407. |
64-132) rank coal (ASTM) means a coal with 64%___________________? |
| A. | Fixed carbon and having a heating value around 13, 200 BTU/1b |
| B. | Ash and heating value around 13, 200 BTU/1b |
| C. | Fixed carbon and heating value around 132 BTU/1b |
| D. | None of these |
| Answer» B. Ash and heating value around 13, 200 BTU/1b | |
| 408. |
(64-132) rank coal (ASTM) means a coal with 64%___________________? |
| A. | Fixed carbon and having a heat value of 13, 200 BTU/1b |
| B. | Ash and a heating value of 13, 200 BTU/1b |
| C. | Fixed carbon and a heating value of 132 BTU/1b |
| D. | None of these |
| Answer» B. Ash and a heating value of 13, 200 BTU/1b | |