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Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?
Related MCQs
About __________ Nm3 of air will be required for the complete combustion of 2Nm3 of CO?
Fischer-Tropsch method aims at the __________?
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Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C ?
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Main constituents of purified Lurgi gas are__________?
Which of the following is coking ?
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Calorific value of __________?
__________ present in coal is not determined in its ultimate analysis ?
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Gray King Assay and Swelling Index of a coal is a measure of its __________?
Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about __________ percent as compared to the use of atmospheric combustion air?
In low temperature carbonisation of coal, the__________?
Which of the following is a single stage, fixed bed high pressure coal gasification process ?
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Washing of coal does not reduce its__________?
Preheating of coal charge for the coke ovens reduces the __________?
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Width of the coke oven towards coke side is slightly more than that on pusher side to__________?
Natural draught produced by a chimney depends upon the __________?
Highly reactive coke have lower __________?
__________ prohibits the use of alcohols directly in petrol engines ?
Volumetric ratio of N2 to O2 in dry atmospheric air is __________?
Bituminous coal__________?
Washing of coal __________?
Coalification means the __________?
The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always __________?
Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________?
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be__________?
The main advantage of forced draft over natural draft is that__________?
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Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C?
Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent?
Which of the following is not a by-product fuel ?
Sulphur in metallurgical coal__________?
Fusion point of coal ash increases with increase in its __________ content?
Calorific value of coke oven gas is around __________ Kcal/Nm3?
Caking index of coal blend used for blast furnace coke making is about__________?
A coal with high ash content__________?
Which of the following is not a binder for coal briquetting ?
Coking time in beehive coke oven is about __________?
Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature ?
The heat of combustion of a fuel__________?
KOH solution used in Orsat apparatus absorbs__________?
In high temperature carbonisation of coal compared to low temperature carbonisation ?
Presence of free moisture in coal during its high temperature carbonisation __________?
The optimum percentage of excess air for combustion depends upon the __________ of the fuel?
Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?
A. 1000
B. 4000
C. 6000
D. 8000
Correct Answer:
4000
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Last Updated:
March 08, 2019