Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Use of preheated primary air Use of thick fire bed All of these Low fusion point of ash (< 1100° C) Use of preheated primary air Use of thick fire bed All of these Low fusion point of ash (< 1100° C) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A particular coal is said to be free burning when it None of these Burns completely Gives smokeless burning Shows little or no fusing action None of these Burns completely Gives smokeless burning Shows little or no fusing action ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The gas which contributes maximum to the heating value of natural gas is CO₂ CO H₂ CH₄ CO₂ CO H₂ CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen percentage (by weight) in atmospheric air is 23 21 19 29 23 21 19 29 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increases in carbonisation temperature Coke even gas yield increases Methane percentage in the coke oven gas increases Tar yield increases Hydrogen percentage in the coke oven gas decreases Coke even gas yield increases Methane percentage in the coke oven gas increases Tar yield increases Hydrogen percentage in the coke oven gas decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke should have very low Sulphur & phosphorous content Fusion point of its ash Porosity Hardness & strength Sulphur & phosphorous content Fusion point of its ash Porosity Hardness & strength ANSWER DOWNLOAD EXAMIANS APP
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