M C Q s D r i v e

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.

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
_____________ prohibits the use of alcohols directly in petrol engines ?
A Low octane number
B High cost & availability
C Low flash point
D Low calorific value
Correct Answer: High cost & availability
Volumetric ratio of N2 to O2 in dry atmospheric air is ______________?
A 0.21
B 3.76
C 4.76
D 0.79
Correct Answer: 3.76
Bituminous coal___________________?
A Ignites less easily than anthracite
B Is generally coking
C Burns with smoky yellow flame
D Both B. and C.
Correct Answer: Both B. and C.
Washing of coal _________________?
A Reduces its ash & sulphur content
B Improves its coking properties
C Increase the fusion point of its ash by removing chlorine compounds
D All A., B. and C.
Correct Answer: All A., B. and C.
Coalification means the ___________________?
A Process of conversion of lignite into anthracite
B Underground gasification of coal
C Complete combustion of coal
D Direct hydrogenation of coal
Correct Answer: Process of conversion of lignite into anthracite