Fuels and Combustion Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if It contains large amount of volatile matter It is stored in tall heaps Smaller fines are stored in large quantity All of these It contains large amount of volatile matter It is stored in tall heaps Smaller fines are stored in large quantity All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal containing very high percentage of durain is called __________ coal. Bright Non-banded Splint Boghead Bright Non-banded Splint Boghead ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air as compared to that in pure oxygen is Same Much lower Much higher Either lower or higher, depends on the type of fuel Same Much lower Much higher Either lower or higher, depends on the type of fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm. 1000 10000 5000 50 1000 10000 5000 50 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High rate of heating of coke ovens May damage its walls due to abrupt excessive swelling of coal Produces larger size coke None of these Increases the time of carbonisation May damage its walls due to abrupt excessive swelling of coal Produces larger size coke None of these Increases the time of carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Critical Air Blast (CAB) value of coke is a direct measure of its None of these Hardness Strength Reactivity None of these Hardness Strength Reactivity ANSWER DOWNLOAD EXAMIANS APP
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