4939Chemical EngineeringMedium
A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that________?
A21% excess oxygen has been used for combustion
BComplete combustion of fuel has taken place
C21% excess air has been used for combustion
DNo excess air has been used for combustion
Correct answer
B. Complete combustion of fuel has taken place
Explanation
The correct answer is Complete combustion of fuel has taken place.