chemical engineering fuels and combustion MCQs – Page 25

Practise multiple-choice questions from chemical engineering fuels and combustion for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering fuels and combustion Mcqs
481. Calorific value of dry wood may be around ______________ Kcal/kg?
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A. 500

B. 5000

C. 50

D. 5
482. White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is_______?
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A. Pulverised coke

B. Coke Oven Gas

C. Tar

D. Sulphide Coke

483. Quantity of coke produced from metallurgical coal may be around _____________ percent?
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A. 50

B. 30

C. 75

D. 95

484. Pick out the wrong statement ?
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A. Coals are divided in four species according to their carbon content in Seylors classification

B. Carburetted water gas is also called blue gas

C. Carbonisation time in a by-product coke oven is about 16 hours

D. Gross and net calorific value of a fuel is the same, if it does not contain hydrogen or

E. rocarbons

485. Which of the following has the least calorific value (kcal/Nm3) ?
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A. Blast furnace gas

B. Sewage gas

C. Coke oven gas

D. Natural gas

486. Calorific value of bituminous coal may be around ______________ Kcal/kg?
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A. 1500

B. 20000

C. 500

D. 6500