A high pressure boiler generates steam at a pressure greater than __________ kg/cm2 .

Question: A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that
[A].

21% excess air has been used for combustion.

[B].

21% excess oxygen has been used for combustion.

[C].

complete combustion of fuel has taken place.

[D].

no excess air has been used for combustion.

Answer: Option C

Explanation:

No answer description available for this question.