Fuels and Combustion Which is the most matured coal? Anthracite Lignite Bituminous Semi-anthracite Anthracite Lignite Bituminous Semi-anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During its calorific value determination by bomb calorimeter, coal is combusted by Oxygen enriched air Oxygen None of these Air Oxygen enriched air Oxygen None of these Air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. Remains constant Decreases Increases May increase or decrease, depends on combustibles Remains constant Decreases Increases May increase or decrease, depends on combustibles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals May damage the coke oven walls during carbonisation Both B and C Produce strong coke Produce weak coke May damage the coke oven walls during carbonisation Both B and C Produce strong coke Produce weak coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The weathering index of a coal Gives an idea of the fusion temperature of ash Is related to its calorific value Is a measure of its size stability, when stored & exposed to weather Is a measure of its caking tendency Gives an idea of the fusion temperature of ash Is related to its calorific value Is a measure of its size stability, when stored & exposed to weather Is a measure of its caking tendency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation (as compared to high temperature carbonisation) of coal Free carbon in tar is more Aliphatic tar is produced Ammonia yield is more All of these Free carbon in tar is more Aliphatic tar is produced Ammonia yield is more All of these ANSWER DOWNLOAD EXAMIANS APP
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