Fuels and Combustion With increase in the temperature of carbonisation of coal Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons All of these Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons All of these Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is 20 10 0 12.5 20 10 0 12.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Not related to Lower than Same as Higher than Not related to Lower than Same as Higher than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec. 50 10 0.5 500 50 10 0.5 500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Narrow coke ovens as compared to wider coke ovens Require less time of carbonisation Produce stronger coke Produce smaller coke All of these Require less time of carbonisation Produce stronger coke Produce smaller coke All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if Smaller fines are stored in large quantity It is stored in tall heaps All of these It contains large amount of volatile matter Smaller fines are stored in large quantity It is stored in tall heaps All of these It contains large amount of volatile matter ANSWER DOWNLOAD EXAMIANS APP
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