Fuels and Combustion A good metallurgical coke Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle Should have low fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in calorific value of fuels, their adiabatic flame temperatures Decrease May increase or decrease ; depends on the quantity of products of combustion Remain unchanged Increase Decrease May increase or decrease ; depends on the quantity of products of combustion Remain unchanged Increase ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Both B and C Produce weak coke Produce strong coke May damage the coke oven walls during carbonisation Both B and C Produce weak coke Produce strong coke May damage the coke oven walls during carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In flue gas analysis by Orsat's apparatus, carbon monoxide is absorbed by Potassium hydroxide Alkaline pyrogallol solution Cuprous chloride None of these Potassium hydroxide Alkaline pyrogallol solution Cuprous chloride None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced. Colour Volatile matter Moisture content Ash content Colour Volatile matter Moisture content Ash content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coking of coal, the ash content (percentage) None of these Increases Remains constant Decreases None of these Increases Remains constant Decreases ANSWER DOWNLOAD EXAMIANS APP
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