In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by__________________?

Related Mcqs:

1. 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

2. In flue gas analysis by Orsat’s apparatus, oxygen is absorbed by____________________?

   A. Potassium hydroxide
   B. Cuprous chloride
   C. Alkaline pyrogallol solution
   D. None of these

3. A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the_________________?

   A. Presence of large quantity of hydrogen in the fuel
   B. Low calorific value of the fuel
   C. High sulphur content in the fuel
   D. Lack of thorough mixing of fuel with air

4. 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

5. 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

6. 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

7. A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?

   A. More
   B. Less
   C. Same
   D. Data insufficient; can’t be predicted

8. The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?

   A. 1
   B. < 1
   C. > 1
   D. Unpredictable

9. Percentage of carbon monoxide in blast furnace gas may be around ____________________ ?

   A. 8
   B. 14
   C. 22
   D. 52

10. 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