Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Large heaps with small surface to volume ratio Shallow and small piles Closed space without any ventilation facility Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Shallow and small piles Closed space without any ventilation facility Fine sizes without the presence of any lump ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coals used for the generation of producer gas should have High caking index High volatile matter content Very low ash content (8-10%) Low fusion point of ash High caking index High volatile matter content Very low ash content (8-10%) Low fusion point of ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will Not change Decrease Increase Increase or decrease depending on the fuel type Not change Decrease Increase Increase or decrease depending on the fuel type ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituents of benzol are Benzene, toluene & xylene Ammonia & phenol Tar & creosote Anthracene & phenol Benzene, toluene & xylene Ammonia & phenol Tar & creosote Anthracene & phenol ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about 25000 kcal/kg Same as that of coal middling 8800 kcal/kg 8800 kcal/m³ 25000 kcal/kg Same as that of coal middling 8800 kcal/kg 8800 kcal/m³ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Very __________ coals are completely devoid of cokability i.e, it is non coking. Both A & B Neither A nor B Mature Young Both A & B Neither A nor B Mature Young ANSWER DOWNLOAD EXAMIANS APP
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