Fuels and Combustion Blast furnace gas burns with a bluish flame, because of the presence of CH₄ S CO₂ CO CH₄ S CO₂ CO ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of pulverised coal in boiler furnace provides Better combustion Less erosion on furnace walls Smokeless burning High calorific value Better combustion Less erosion on furnace walls Smokeless burning High calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Contains more than 90% durain Contains more than 90% fussain Contains mainly vitrain & clarain and is generally coking Is non-coking Contains more than 90% durain Contains more than 90% fussain Contains mainly vitrain & clarain and is generally coking Is non-coking ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal with high ash content Has higher calorific value Is harder and stronger Is not subjected to washing Has low quantity of mineral matter Has higher calorific value Is harder and stronger Is not subjected to washing Has low quantity of mineral matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Thick fire bed and preheated primary air Low forced draught and fuel bed temperature Low reactivity of carbonised residue containing high proportions of iron & sulphur All of these Thick fire bed and preheated primary air Low forced draught and fuel bed temperature Low reactivity of carbonised residue containing high proportions of iron & sulphur All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to Make it look attractive None of these Avoid radiation heat loss Minimise its corrosion Make it look attractive None of these Avoid radiation heat loss Minimise its corrosion ANSWER DOWNLOAD EXAMIANS APP
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