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 gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having _____________________?
A Higher methane content and thus higher calorific value
B Higher carbon monoxide content
C Lower carbon dioxide content
D None of these
Correct Answer: Higher methane content and thus higher calorific value
For every 10% increase in the excess air; the fuel consumption increases by _______________ percent?
A 0.1
B 0.2
C 0.5
D 1.0
Correct Answer: 0.1
Main use of hard coke produced by high temperature carbonisation is in the ____________________ ?
A Iron blast furnace
B Cupola in foundries
C Sinter making
D Domestic ovens
Correct Answer: Iron blast furnace
Percentage of carbon monoxide in blast furnace gas may be around ____________________ ?
A 8
B 14
C 22
D 52
Correct Answer: 22
Which is the most matured coal ?
A Lignite
B Bituminous
C Semi-anthracite
D Anthracite
Correct Answer: Anthracite
Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its ___________________?
A Emissivity factor is higher
B Sulphur content is lower
C Flue gas has lower dew point thereby facilitating more waste heat recovery
D All A., B. and C.
Correct Answer: All A., B. and C.
Incomplete combustion of a fuel is characterised by the high _______________ in the flue gas?
A Smoke
B Temperature
C Oxygen
D Carbon monoxide
Correct Answer: Carbon monoxide
Very ______________ coals are completely devoid of cokability i.e., it is non-coking ?
A Young
B Mature
C Both A & B
D Neither A nor B
Correct Answer: Both A & B
High excess air in combustion of fuels results in____________________?
A Increased fuel consumption
B Incomplete combustion
C Smoky flame
D None of these
Correct Answer: Increased fuel consumption
“Micum Index” of a coke is a measure of its___________________?
A Reactivity
B Porosity
C Bulk density
D Hardness & strength
Correct Answer: Hardness & strength