The sequence of absorption in flue gas analysis by Orsat's apparatus is respectively_______________________?
Correct answer: A. CO2, O2, CO
- A. CO2, O2, CO
- B. CO, O2, CO2
- C. CO2, CO, O2
- D. O2, CO2, CO
Explanation
Orsat analysis absorbs carbon dioxide first with alkali, oxygen next with alkaline pyrogallol, and carbon monoxide last with ammoniacal cuprous chloride. The sequence is therefore CO₂, O₂, CO.
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