A. Lignite
B. Bituminous
C. Semi-anthracite
D. Anthracite
Which is the most matured coal ? Read More »
Fuels and Combustion A. Emissivity factor is higher
B. Sulphur content is lower
C. Flue gas has lower dew point thereby facilitating more waste heat recovery
D. All A., B. and C.
A. Smoke
B. Temperature
C. Oxygen
D. Carbon monoxide
A. Young
B. Mature
C. Both A & B
D. Neither A nor B
Very ______________ coals are completely devoid of cokability i.e., it is non-coking ? Read More »
Fuels and Combustion A. Increased fuel consumption
B. Incomplete combustion
C. Smoky flame
D. None of these
High excess air in combustion of fuels results in____________________? Read More »
Fuels and Combustion A. Reactivity
B. Porosity
C. Bulk density
D. Hardness & strength
“Micum Index” of a coke is a measure of its___________________? Read More »
Fuels and Combustion A. Hydrogen
B. Carbon monoxide
C. Acetylene
D. Methane
_____________ has the widest inflammability limit (explosion limit) of all the gases? Read More »
Fuels and Combustion A. Should have high porosity
B. Should be brittle
C. Must contain moderate quantities of ash, moisture, sulphur and volatile matters
D. Should have low fusion point of its ash
A good metallurgical coke___________________? Read More »
Fuels and Combustion A. Only CO
B. Both CO and CO2
C. Both CO and O2
D. All CO, CO2, and O2
The cuprous chloride used in orsat apparatus can absorb___________________? Read More »
Fuels and Combustion A. Carbon monoxide
B. Hydrocarbons
C. Hydrogen
D. Oxygen
