Fuels and Combustion Undercharging of coal in the by-product coke ovens results in No change in the c.v. of coke oven gas Decrease in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput No change in the c.v. of coke oven gas Decrease in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen in coal Comes from protein in parent vegetable matter Is recovered as ammonia during its carbonisation Is present upto 1-2% All of these Comes from protein in parent vegetable matter Is recovered as ammonia during its carbonisation Is present upto 1-2% All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not applicable to fluidised bed combustion of coal? It can not burn low grade coal None of these Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency It can not burn low grade coal None of these Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas is stripped of its H₂S and mercaptans content by Adsorption on bog iron bed Bubbling it through dilute sulphuric acid Absorption in wash oil Adsorption on silica gel Adsorption on bog iron bed Bubbling it through dilute sulphuric acid Absorption in wash oil Adsorption on silica gel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Octane number of 2, 2, 4 - trimethyl pen-tane is 100 In between 0 and 100 More than 100 100 In between 0 and 100 More than 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of excess of combustion air in the combustion of fuels results in Heat losses Condensation of water vapour from the fuel gas None of these Long flame Heat losses Condensation of water vapour from the fuel gas None of these Long flame ANSWER DOWNLOAD EXAMIANS APP
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