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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

Blast furnace gas compared to coke oven gas has_________________?
A Lower ignition temperature
B Narrower limit of inflammability
C Higher calorific value
D Lower theoretical flame temperature
Correct Answer: Lower theoretical flame temperature
Which of the following has the highest calorific value (kcal/Nm3) ?
A Carburetted water gas
B Gobar gas
C Natural gas
D LPG
Correct Answer: LPG
The main function of primary air in pulverised coal fired burner is to_________________?
A Burn CO to CO2
B Dry and transport the coal
C Have proper combustion by supplying it around the burner
D Preheat the tertiary air used for complete combustion of CO to CO2
Correct Answer: Dry and transport the coal
Weathering of coal during storage causes_______________?
A Reduction in coal size
B Increase in its friability
C Decrease in its caking capacity
D All A., B. and C.
Correct Answer: All A., B. and C.
Number of macrocomponents present in coal according to Stopes are ___________________?
A Four
B Five
C Six
D Two
Correct Answer: Four
Which will have the least volatile matter and hence will be the most difficult to ignite ?
A Bituminous coal
B Coke
C Semi-bituminous coal
D Anthracite
Correct Answer: Coke
Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal ?
A Vitrain
B Clarain
C Durain
D Fussain
Correct Answer: Vitrain
High sulphur content in a fuel ______________ of the flue gases?
A Decreases the dew point
B Increases the dew point
C Reduces the combustion efficiency by limiting the permissible temperature reduction
D Both B. and C.
Correct Answer: Both B. and C.
Low temperature oxidation of stored coal results in the________________?
A Decrease in its caking power & calorific value
B Decrease in its carbon & hydrogen content
C Increase in its oxygen content
D All A., B. and A.
Correct Answer: All A., B. and A.
High rate of heating of coke ovens____________________?
A May damage its walls due to abrupt excessive swelling of coal
B Produces larger size coke
C Increases the time of carbonisation
D None of these
Correct Answer: May damage its walls due to abrupt excessive swelling of coal
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