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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

The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?
A 1
B < 1
C > 1
D Unpredictable
Correct Answer: 1
Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________________?
A It contains large amount of volatile matter
B It is stored in tall heaps
C Smaller fines are stored in large quantity
D All A., B. and C.
Correct Answer: All A., B. and C.
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?
A Low
B High
C Very high, if the fuel is of low calorific value
D None of these
Correct Answer: Low
The main advantage of forced draft over natural draft is that____________________?
A Combustion of fuel is complete
B Smaller height chimney can be used
C Furnace control is easier
D All A., B. & C.
Correct Answer: All A., B. & C.
Oxygen percentage (by weight) in atmospheric air is_________________?
A 19
B 21
C 23
D 29
Correct Answer: 23
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?
A 400-500
B 900-1000
C 1400-1500
D 1700-1800
Correct Answer: 900-1000
Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?
A 4
B 96
C 20
D 40
Correct Answer: 20
Which of the following is not a by-product fuel ?
A Sewage gas
B Refinery gas
C Producer gas
D Bagasse
Correct Answer: Producer gas
Sulphur in metallurgical coal__________________?
A Contributes to its heating value
B Affects the quality of steel produced as cracks develop on the surface while rolling the steel
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
Fusion point of coal ash increases with increase in its ____________ content?
A Iron sulphate
B Iron silicate
C Lime and magnesia
D All A., B. and C.
Correct Answer: All A., B. and C.
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