The proper indication of incomplete combustion is_______________?
Correct answer: A. high CO content in flue gases at exit
- A. high CO content in flue gases at exit
- B. high CO2 content in flue gases at exit
- C. high temperature of flue gases
- D. the smoking exhaust from chimney
Explanation
Incomplete combustion leaves unburnt carbon compounds and produces excess carbon monoxide, so a high CO concentration in the flue gas is the most direct indication. Smoke can also occur, but it is less specific.
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