Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Closed space without any ventilation facility Large heaps with small surface to volume ratio Shallow and small piles Fine sizes without the presence of any lump Closed space without any ventilation facility Large heaps with small surface to volume ratio Shallow and small piles Fine sizes without the presence of any lump ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of coal is accelerated by the Absence of porous or friable particles Storage in large heaps Storage in compressed piles All of these Absence of porous or friable particles Storage in large heaps Storage in compressed piles All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Soft coke is not None of these Produced by low temperature carbonisation of coal A domestic fuel Used in blast furnaces None of these Produced by low temperature carbonisation of coal A domestic fuel Used in blast furnaces ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. None of these Density Porosity Electrical resistivity None of these Density Porosity Electrical resistivity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following coke has the least percentage of ash? Petroleum coke Foundary coke Metallurgical coke Beehive coke Petroleum coke Foundary coke Metallurgical coke Beehive coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Supply of excess air for complete combustion of fuel is necessitated to facilitate Attainment of high temperature Its thorough mixing with air None of these Attainment of chemical equilibrium Attainment of high temperature Its thorough mixing with air None of these Attainment of chemical equilibrium ANSWER DOWNLOAD EXAMIANS APP
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