A. Furnace oil, light diesel oil and tar/PCM
B. Pulverised coking coal
C. Coal middling from washeries
D. B.F. gas, coke oven gas and L.D. converter gas
Correct Answer: Pulverised coking coal ✔
Last Updated: March 08, 2019
Related MCQs
- 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__________?
- 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?