Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal. Gasification Coalification Carbonisation Oxidation Gasification Coalification Carbonisation Oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Provides a lower rate of heat release Can be done with less excess air Develops a non-luminous flame Develops a low temperature flame Provides a lower rate of heat release Can be done with less excess air Develops a non-luminous flame Develops a low temperature flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. 500 750 1100 950 500 750 1100 950 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuel gases is heavier than air? Natural gas Blast furnace gas Coke oven gas Water gas Natural gas Blast furnace gas Coke oven gas Water gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gray-King Assay and Roga Index of coal is a measure of its Grindability Abradability Weathering properties Caking and swelling properties Grindability Abradability Weathering properties Caking and swelling properties ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In general, the limit of inflammability/explosion limit of fuel gases is widened by the All of these Use of pure oxygen for combustion instead of air Increase in gas pressure Increase in temperature (i.e. preheating) All of these Use of pure oxygen for combustion instead of air Increase in gas pressure Increase in temperature (i.e. preheating) ANSWER DOWNLOAD EXAMIANS APP
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