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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Which of the following is a rich fuel gas ?
A Producer gas
B Coal gas from underground gasification of coal
C Refinery gases
D None of these
Correct Answer: Refinery gases
With increases in carbonisation temperature_______________________?
A Coke even gas yield increases
B Tar yield increases
C Hydrogen percentage in the coke oven gas decreases
D Methane percentage in the coke oven gas increases
Correct Answer: Coke even gas yield increases
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
Correct Answer: Fixed carbon and having a heating value around 13, 200 BTU/1b
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the_________________?
A Presence of large quantity of hydrogen in the fuel
B Low calorific value of the fuel
C High sulphur content in the fuel
D Lack of thorough mixing of fuel with air
Correct Answer: Lack of thorough mixing of fuel with air
Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant ?
A Ammonium sulphate
B Ammonium nitrate
C Ammonium phosphate
D None of these
Correct Answer: Ammonium sulphate
Main constituent of natural gas is ________________?
A CH4 (upto 90%)
B C2H6
C C3H8
D H2
Correct Answer: CH4 (upto 90%)
Froth floatation is used for_________________?
A Washing fine coal dust (< 0.5 mm size)
B Washing lump coal (> 80 mm size)
C Removing ash from the coal based on difference in specific gravity of coal and ash
D All A., B. and C.
Correct Answer: Washing fine coal dust (< 0.5 mm size)
Anthracite can be used for___________________?
A Recarbonising steel
B Making carbon electrodes
C Blending with highly coking coal to check its swelling which helps in saving coke even walls
D All A., B. and C.
Correct Answer: All A., B. and C.
Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about _______________ percent?
A 5
B 25
C 55
D 75
Correct Answer: 5
Which of the following accounts for maximum energy loss in a boiler ?
A Flue gases
B Ash content in the fuel
C Incomplete combustion
D Unburnt carbon in flue gases
Correct Answer: Flue gases
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