A. Producer gas
B. Coal gas from underground gasification of coal
C. Refinery gases
D. None of these
Related Mcqs:
- 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 - For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?
A. Increase
B. Decrease
C. Increase or decrease depending on the fuel type
D. Not change - Coke oven gas is a better fuel than blast furnace gas, because of its higher________________?
A. Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)
B. Adiabatic flame temperature
C. Heat release rate (thus requiring smaller combustion chamber)
D. All A., B. and C. - Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in___________________?
A. Air
B. Oxygen
C. Either A. or B.
D. Either A. or B. without gain or loss of heat - 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?
A. 400-500
B. 900-1000
C. 1400-1500
D. 1700-1800 - For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3), while the C.V. is same on weight basis (i.e., kcal/kg) ?
A. Propane and acetylene
B. Propane and LPG
C. Sewage gas and gobar gas
D. B.F. gas and coke oven gas - Which of the following is a poisonous fuel gas ?
A. Coke oven gas
B. Blast furnace gas
C. Natural gas
D. None of these - Which of the following is unsuitable fuel for producer gas manufacture ?
A. Coke
B. Anthracite
C. Coal having low fusion point of its ash
D. Coal having high fusion point of its ash - Which is the heaviest fuel gas out of the following ?
A. Blast furnace gas
B. Coke oven gas
C. Water gas
D. Carburetted water gas - Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm3 gas ?
A. Blast furnace gas
B. Natural gas
C. Producer gas
D. Water gas
