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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

In low temperature carbonisation of coal, the________________?
A Yield of coke oven gas is 290 Nm3 /ton dry coal
B Volatile matter in coke is zero
C Temperature maintained is 700°C
D Yield of tar is about 3% of dry coal
Correct Answer: Temperature maintained is 700°C
Which of the following is a single stage, fixed bed high pressure coal gasification process ?
A Winkler process
B Kopper-Totzek process
C Lurgi Process
D None of these
Correct Answer: Lurgi Process
Blast furnace gas constitutes mainly of_________________?
A N2 & CH4
B N2 & H2
C N2 & CO
D CH4 & CO2
Correct Answer: N2 & CO
Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO2, 20%CO and 10%O2. The percent excess oxygen used is __________________?
A 20
B 12.5
C 0
D 10
Correct Answer: 0
Washing of coal does not reduce its______________________?
A S & P content
B Heating value
C Fusion point of ash
D None of these
Correct Answer: None of these
Preheating of coal charge for the coke ovens reduces the __________________?
A Time of carbonisation
B Yield of gas and tar
C Fuel consumption in coking
D All A., B. and C.
Correct Answer: All A., B. and C.
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm3) ?
A Producer gas
B Carburetted water gas
C Natural gas
D Liquefied petroleum gas
Correct Answer: Liquefied petroleum gas
Width of the coke oven towards coke side is slightly more than that on pusher side to____________________?
A Facilitate easy discharging of coke as it swells during carbonisation
B Facilitate uniform heating of the oven
C Increase the output of the coke
D None of these
Correct Answer: Facilitate easy discharging of coke as it swells during carbonisation
Natural draught produced by a chimney depends upon the _____________________?
A Density of the chimney gases
B Height of the chimney
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
Highly reactive coke have lower ___________________?
A Porosity
B Coke reactivity index (CRI)
C Critical air blast (CAB) value
D Both B. and C.
Correct Answer: Critical air blast (CAB) value
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