Chemical Engineering — Test 103
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Question 1
Percentage of methane in coke oven gas may be around _____________________?
Question 2
A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that___________________?
Question 3
Which of the following combustibles is absent in blast furnace gas ?
Question 4
Tolerable concentration of toxic carbon monoxide in atmospheric air is about ______________ ppm?
Question 5
Higher fuel combustion efficiency cannot be achieved by_________________?
Question 6
A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is_________________?
Question 7
Softening temperature of coal ash is a measure of the _____________ of coal?
Question 8
Calorific value of coke even gas produced by low temperature carbonisation of coal is about ____________ Kcal/Nm3?
Question 9
During combustion of coal on grate, clinker formation is increased by the___________________?
Question 10
Short/intense flame is produced during combustion of gaseous fuel by using________________?