Q
A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that___________________?
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A
A. 21% excess air has been used for combustion
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B
B. 21% excess oxygen has been used for combustion
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C
C. Complete combustion of fuel has taken place
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D
D. No excess air has been used for combustion
Correct Answer:
C. C. Complete combustion of fuel has taken place
