Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 15 of 47)

Attempt Fuels and Combustion Quiz
The cooling medium used in dry quenching of coke is___________________?
A. Nitrogen
B. Air
C. Phenolic water
D. Carbon dioxide
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Fuel consumption in coke making can be reduced by___________________?
A. Preheating, blending and de-ashing the coal
B. Stamped charging of coal
C. Dry quenching of coke
D. All a., b. and c.
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Shatter index of the coke is a measure of its___________________?
A. Strength
B. Bulk density
C. Reactivity
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Orsat apparatus__________________?
A. Gives flue gas analysis on dry basis
B. Determines n2 in flue gas indirectly
C. Can’t determine co in flue gas, if it is < 0.2%
D. All a., b. & c.
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Calorific value of tar is about _____________ Kcal/kg?
A. 8800
B. 12000
C. 14000
D. 16000
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With increase in moisture content of coal, its_____________________?
A. Calorific value increases sometimes
B. Bulk density always decreases
C. Clinkering tendency during combustion increases
D. None of these
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Which of the following has the highest gross calorific value ?
A. Blast furnace gas
B. Coke oven gas
C. Carburetted water gas
D. Oil refinery gas
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Which of the following is not a ‘manufactured’ fuel ?
A. Lpg
B. Coal briquettes
C. Tar
D. Colloidal fuels
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Purity of coke means that, it is high in carbon and low in __________________?
A. Volatiles
B. Ash
C. Iron
D. Mositure
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Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?
A. Higher calorific value
B. Lower hydrogen content
C. Both a. and b.
D. Neither a. nor b.
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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