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 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) All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Spontaneous combustion of coal on storage results due to Inadequate ventilation All of these Storage in large heaps with small surface to volume ratio Low temperature oxidation Inadequate ventilation All of these Storage in large heaps with small surface to volume ratio Low temperature oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of None of these Ammonia Benzol Tar None of these Ammonia Benzol Tar ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Micum Index of a coke is a measure of its Hardness & strength Porosity Reactivity Bulk density Hardness & strength Porosity Reactivity Bulk density ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation Increases the loss of fine coal dust from the ovens when charging Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these Increases the loss of fine coal dust from the ovens when charging Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Contains more than 90% fussain Contains more than 90% durain Is non-coking Contains mainly vitrain & clarain and is generally coking Contains more than 90% fussain Contains more than 90% durain Is non-coking Contains mainly vitrain & clarain and is generally coking ANSWER DOWNLOAD EXAMIANS APP
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