A. Potassium hydroxide
B. Cuprous chloride
C. Alkaline pyrogallol solution
D. None of these
Related Mcqs:
- In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by__________________?
A. Cuprous chloride
B. Potassium hydroxide
C. Alkaline pyrogallol solution
D. None of these - In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by______________________?
A. Potassium hydroxide
B. Dilute potassium carbonate
C. Cuprous chloride
D. Alkaline pyrogallol solution - Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO2, 20%CO and 10%O2. The percent excess oxygen used is __________________?
A. 20
B. 12.5
C. 0
D. 10 - The sequence of absorption in flue gas analysis by Orsat’s apparatus is respectively_______________________?
A. CO2, O2, CO
B. CO, O2, CO2
C. CO2, CO, O2
D. O2, CO2, CO - Nitrogen present in the flue gas is determined in the Orsat apparatus by absorbing it in_____________________?
A. KOH
B. Ammoniacal cuprous chloride
C. Pyrogallol solution
D. None of these - Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?
A. 4
B. 96
C. 20
D. 40 - If oxygen content in the flue gas rises too high, fuel is being wasted by _______________?
A. Incomplete combustion
B. Dry gas/stack gas loss
C. Moisture loss
D. None of these - If CO2 is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as___________________?
A. O2
B. CO
C. N2
D. SO2 - Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is _______________ percent?
A. 71%
C. In between 37 & 71%
D. None of these - When incomplete combustion loss is high, the flue gas analysis shows large amount of ________________?
A. CO2
B. CO
C. O2
D. C
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