As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion _______________ for the same percentage of excess air?
Correct answer: B. Increases
- A. Decreases
- B. Increases
- C. Remain same
- D. May increase or decrease depending on the type of fuel
Explanation
Increasing the C/H ratio increases the carbon available per unit mass of fuel, so more carbon is converted to CO2 under comparable combustion conditions. The same excess-air percentage does not reverse this trend.
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