Home
About Us
Contact Us
Privacy Policy
Search
Home
→
Fuels and Combustion
→
Volatile matter content of metallurgical coke may be around ______________ percent?
Related MCQs
Coking coals are invariably__________?
Ratio of primary air to secondary air increases with increase in the rank of coal, because the__________?
Oxygen required for theoretically complete combustion of 1 Nm3 methane is __________ Nm3?
Calorific value of wood gas is about __________ kcal/Nm3?
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is__________?
Ammonia content in raw coke oven gas is about __________ gm/Nm3?
Presence of __________ in a dry gaseous fuel does not contribute to its calorific value?
For maximum discharge through a chimney, its height should be__________?
Which of the following has the highest flame speed ?
Which of the following fuels is generally not used in thermal power plant boiler firing ?
Use of excess of combustion air in the combustion of fuels results in__________?
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the__________?
Which of the following is called “blue gas”?
Rate of low temperature oxidation of coal due to bad storage conditions__________?
Dust content in raw blast furnace gas is about __________ gm/Nm3; hence it is cleaned to the dust level of about < 10 mg /Nm3 before use?
When steam is passed over coal resulting in the endothermic reaction represent by, C + H2O = CO + H2, it is called the __________ of coal?
Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec?
Bomb calorimeter is used for the determination of calorific value of the __________ fuels?
Coke ovens in steel plant are heated by __________?
Soft coke is not __________?
Percentage of hydrogen in coke oven gas may be around __________?
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__________?
Volatile matter content of metallurgical coke may be around ______________ percent?
A. 1-2
B. 10-15
C. 22-26
D. 30-33
Correct Answer:
1-2
✔
Last Updated:
March 08, 2019