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Percentage of hydrogen in coke oven gas may be around ___________________?
Related MCQs
A coal with high ash content is undesirable, as__________?
Which of the following is the most poisonous gas ?
Gross heating value of coal is __________ the net heating value?
Which of the following accentuates clinkering trouble on furnace grate burning coal ?
Increase in ash content of blast furnace coke__________?
The difference between total carbon and fixed carbon of coal will be minimum in case of__________?
In high temperature carbonisation (as compared to low temperature carbonisation) of coal__________?
Gross heating value of coal is __________ the net heating value?
The internal energy of the combustion products is __________ compared to that of reactants?
Lignite is __________?
High pressure coal gasification is employed in __________ process?
Use of pulverised coal in boiler furnace provides__________?
Which of the following fuel gases is heavier than air ?
Which of the following is not a by-product fuel ?
Cannel coal__________?
In Lurgi coal gasifier__________?
Which of the following has the highest flame velocity ?
Which of the following has the highest theoretical flame temperature ?
Which of the following will generate maximum volume of product of complete combustion (Nm3/Nm3 of fuel) ?
Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?
C/H ratio is the minimum in case of__________?
The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be__________?
The gasification reaction represented by, C + H2O = CO + H2, is__________?
Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm3?
For long flame and easy ignition, the coal used should have__________?
Coke oven gas is stripped of its H2S and mercaptans content by__________?
Presence of nitrogen in combustion air does not reduce the __________?
Coke oven gas constitutes mainly of __________?
Natural draft created by the chimney depends upon __________?
Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has__________?
Purity of coke means that, it is high in carbon and low in __________?
Which of the following is not a ‘manufactured’ fuel ?
Which of the following has the highest gross calorific value ?
With increase in moisture content of coal, its__________?
Calorific value of tar is about __________ Kcal/kg?
Orsat apparatus__________?
Shatter index of the coke is a measure of its__________?
Fuel consumption in coke making can be reduced by__________?
The cooling medium used in dry quenching of coke is__________?
Proximate analysis of coal determines its __________ content?
The maximum percentage of CO2 in a flue gas (from a carbonaceous fuel) can be__________?
Yield of pitch from distillation of high temperature tar is around __________ percent?
Hardgrove Grindability index of four coal samples are given below. Which of them is the easiest to grind ?
Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent?
‘Fat’ coal means a coal having __________?
Naphthalene is removed from coke oven gas by__________?
Octane number of 2, 2, 4 – trimethyl pentane is __________?
Which of the following has the highest calorific value ?
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain __________?
Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm?
Which of the following has the highest heat of combustion ?
Percentage of hydrogen in coke oven gas may be around ___________________?
A. 10
B. 25
C. 45
D. 60
Correct Answer:
60
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Last Updated:
March 08, 2019