Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 46 of 47)

Attempt Fuels and Combustion Quiz
Yield of coke oven gas in low temperature carbonisation of coal is about ______________ Nm3 /ton of dry coal?
A. 60
B. 160
C. 500
D. 750
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Orsat apparatus is meant for ___________________?
A. Gravimetric analysis of flue gas
B. Finding out combustion efficiency
C. Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride
D. None of these
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The combustion reaction, C + O2 = CO2, is ___________________?
A. Exothermic
B. Endothermic
C. Autocatalytic
D. None of these
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Which of the following constituents of coal is the most important in the production of coke ?
A. Mositure
B. Ash
C. Volatiles
D. Carbon
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The liquid used for the washing of coal in an industrial coal washery is a mixture of water and ____________________?
A. Carbon tetrachloride
B. Sand (40%)
C. Mineral oil of high viscosity & specific gravity (1.6)
D. None of these
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Quantity of coke produced from metallurgical coal may be around _____________ percent?
A. 30
B. 50
C. 75
D. 95
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Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is _______________ percent?
A. 71%
C. In between 37 & 71%
D. None of these
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Fussain _____________________?
A. Is friable, charcoal like substance
B. Has highest fixed carbon and lowest volatile matter content of all the four banded components
Of Coal
C. Is non-coking, but when blended with highly coking coal, controls its swelling and produces
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Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the ________________ of coal?
A. Hydrogenation
B. Gasification
C. Carbonisation
D. None of these
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Gross and net calorific value of a fuel will be the same__________________?
A. If its ash content is zero
B. If its carbon content is very low
C. If its hydrogen/hydrogen compound content is zero
D. Under no circumstances
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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