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.

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon _________________?
A Is less liable to spontaneous combustion on storage
B Is more difficult to ignite and produces a shorter flame
C Requires smaller combustion space and less secondary air
D None of these
Correct Answer: None of these
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an ______________ bed gasifier?
A Entrained
B Moving
C Fixed
D Fluidised
Correct Answer: Entrained
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around_____________________?
A 230 V AC
B 60 KV AC
C 230 V DC
D 60 KV DC
Correct Answer: 60 KV DC
Coal tar (produced by high temperature carbonisation) is the main source of_________________?
A Aromatic compounds
B Aliphatic compounds
C Paraffins
D Olefins
Correct Answer: Aromatic compounds
Hard coke is manufactured from___________________?
A Lignite
B Bituminous coal
C Semi-anthracite
D Anthracite
Correct Answer: Bituminous coal
Which of the following is a primary fuel ?
A Blast furnace coke
B Gasoline
C Natural gas
D Wood charcoal
Correct Answer: Natural gas
Coking time in narrow by-product coke ovens is around ______________ hours?
A 18
B 48
C 8
D 80
Correct Answer: 18
Too much of excess air in combustion results in high___________________?
A Fuel consumption for the same heat load
B Stack gas temperature
C Percentage of oxygen in flue gases
D All A., B. and C.
Correct Answer: All A., B. and C.
Washing of coal is done to reduce the_________________?
A Inherent impurities
B Adhering impurities
C Mineral matter
D Both B. and C.
Correct Answer: Both B. and C.
Efficient burning of anthracite coal requires______________________?
A Low preheat of air
B Fine grinding
C High excess air
D All A., B. and C
Correct Answer: Fine grinding