A Best Way To Crack Gorenment Job Exams

Fuels and Combustion MCQs

Chemical Engineering Objective Questions

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372. With increase in the oxygen content of the coal, its __________ decreases.
A. Calorific value
B. Caking power
C. Both A & B
D. Neither A nor B
Discussion
373. Gobar gas constitutes mainly of
A. CH4 & CO2
B. CO & CO2
C. CH4 & N2
D. CO & N2
Discussion
374. Producer gas comprises mainly of
A. CO & N2
B. CO & H2
C. CO2 & N2
D. CO2 & H2
Discussion
375. Flue gas from the heating chamber of byproduct coke ovens is removed by
A. Forced draft fan
B. Induced draft fan
C. Steam ejector
D. Natural draft
Discussion
376. Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.
A. 5
B. 10
C. 20
D. 35
Discussion
377. Removal of hydrogen from coke oven gas
A. Increases its calorific value
B. Decreases its calorific value
C. Does not alter its calorific value
D. Is not possible on commerical scale
Discussion
378. A coal that softens and fuses on heating is
A. Classified
B. Carbonised
C. Caking
D. Non-caking
Discussion

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