Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?
Correct answer: A. 2.4
- A. 2.4
- B. 1.75
- C. 0.87
- D. 11.4
Explanation
Combustion requires 0.5 Nm³ of O₂ per Nm³ of CO: 2CO + O₂ → 2CO₂. Since dry air contains about 21% oxygen, the theoretical air requirement is 0.5/0.21 ≈ 2.4 Nm³.
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