Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: Iron blast furnace

Percentage of carbon monoxide in blast furnace gas may be around ____________________ ?

A 8

B 14

C 22

D 52

Review Detailed Answer

Correct Answer: 22

Which is the most matured coal ?

A Lignite

B Bituminous

C Semi-anthracite

D Anthracite

Review Detailed Answer

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.

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: Hardness & strength

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

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 _____________________?

For every 10% increase in the excess air; the fuel consumption increases by _______________ percent?

Main use of hard coke produced by high temperature carbonisation is in the ____________________ ?

Percentage of carbon monoxide in blast furnace gas may be around ____________________ ?

Which is the most matured coal ?

Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its ___________________?

Incomplete combustion of a fuel is characterised by the high _______________ in the flue gas?

Very ______________ coals are completely devoid of cokability i.e., it is non-coking ?

High excess air in combustion of fuels results in____________________?

“Micum Index” of a coke is a measure of its___________________?