Fuels and Combustion Blast furnace gas compared to coke oven gas has Higher calorific value Narrower limit of inflammability Lower theoretical flame temperature Lower ignition temperature Higher calorific value Narrower limit of inflammability Lower theoretical flame temperature Lower ignition temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Increase in ash content of blast furnace coke Increases its consumption in the furnace Decreases its hardness and abrasion resistance Does not affect its consumption in the furnace Reduces its consumption in the furnace Increases its consumption in the furnace Decreases its hardness and abrasion resistance Does not affect its consumption in the furnace Reduces its consumption in the furnace ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is the most reactive (as regards the formation of CO + H₂ from C + H₂O) ? Sub-bituminous coal Low temperature coke Blast furnace coke Anthracite coal Sub-bituminous coal Low temperature coke Blast furnace coke Anthracite coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker. 1250 1400 1100 1350 1250 1400 1100 1350 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Weathering of coal during storage causes Increase in its friability Decrease in its caking capacity Reduction in coal size All of these Increase in its friability Decrease in its caking capacity Reduction in coal size All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%). 150 5000 1500 3500 150 5000 1500 3500 ANSWER DOWNLOAD EXAMIANS APP
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