Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 23 of 47)

Attempt Fuels and Combustion Quiz
Air/gas ratio for complete combustion will be the highest for__________________?
A. Lpg
B. Gobar gas
C. Coke oven gas
D. Carburetted water gas
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Calorific value of furnace oil is about _______________ Kcal/kg?
A. 10,000
B. 15,000
C. 5,000
D. 20,000
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During combustion of gaseous fuels, deficiency of air_________________?
A. Lengthens the flame
B. Tends to shorten the flame
C. Does not affect the flame length
D. Increases the flame temperature
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Fixed carbon in coal is defined as______________________?
A. That present in volatile matters
B. The total quantity of carbon present in the coal
C. Hundred minus the percentage of volatile matter, ash and mositure
D. The one which is present in the residue after combustion
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Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?
A. 10
B. 25
C. 50
D. 75
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A coal having high amount of volatile matter____________________?
A. Would require smaller combustion chamber
B. Produces very little of tar and gas on carbonisation
C. Ignites easily and burns with long smoky flame
D. All a., b. and c.
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Which of the following is not a manufactured fuel ?
A. Coke breeze
B. Soft coke
C. Colloidal fuels
D. Charcoal
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The main product of high temperature carbonisation of coal is__________________?
A. Coke
B. Ammonia
C. Tar
D. Coke oven gas
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Pensky-Marten apparatus is used for those oils, whose flash points are _____________ °F?
A. < 120
B. > 120
C. < 90
D. 90-110
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During its calorific value determination by bomb calorimeter, coal is combusted by _________________?
A. Air
B. Oxygen
C. Oxygen enriched air
D. None of these
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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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