Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Is more for low volatile coal compared to high volatile coal Is accelerated by storage in large heaps with small surface to volume ratio Decreases with increase in surface area Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Is accelerated by storage in large heaps with small surface to volume ratio Decreases with increase in surface area Does not vary with increase in surface area ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Is not undersirable Badly affects the quality of steel Reduces its calorific value Increases its caking power Is not undersirable Badly affects the quality of steel Reduces its calorific value Increases its caking power ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High amount of sulphur and phosphorous in coke causes None of these Brittleness of steel made by using it Decrease in its calorific value Increase in its strength None of these Brittleness of steel made by using it Decrease in its calorific value Increase in its strength ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Soft coke is not Used in blast furnaces None of these Produced by low temperature carbonisation of coal A domestic fuel Used in blast furnaces None of these Produced by low temperature carbonisation of coal A domestic fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a manufactured fuel ? Bagasse Semi-coke Furnace oil Kerosene Bagasse Semi-coke Furnace oil Kerosene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In general, the limit of inflammability/explosion limit of fuel gases is widened by the Use of pure oxygen for combustion instead of air All of these Increase in gas pressure Increase in temperature (i.e. preheating) Use of pure oxygen for combustion instead of air All of these Increase in gas pressure Increase in temperature (i.e. preheating) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS