Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?

Related Mcqs:

1. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

   A. √T
   B. 1/√P
   C. √y
   D. 1/√ρ

2. With increase in compression ratio, the volumetric efficiency of air compressor____________________?

   A. Increases
   B. Decreases
   C. Remain same
   D. May increase or decrease (depends on the suction pressure)

3. In the diving apparatus, helium is used along with oxygen, because it is ____________________?

   A. Easily available
   B. Not soluble in blood at high pressure
   C. Lighter than nitrogen
   D. Completely miscible with oxygen

4. Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?

   A. A, C, B, D
   B. D, B, C, A
   C. D, C, B, A
   D. D, A, B, C

5. Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is___________________?

   A. Nickel
   B. Cobalt
   C. Vanadium
   D. Platinum

6. Plants produce carbohydrates from the CO2 present in the atmosphere by_________________?

   A. Polymerisation
   B. Photochemical reaction
   C. Oxidation
   D. None of these

7. Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?

   A. 90% tungsten carbide and 10% cobalt
   B. 70% aluminium oxide & 30% silica
   C. 30% nickel, 15% chromium & 55% tungsten
   D. 65% tungsten & 35% zirconium

8. Eutectoid composition of carbon steel at room temperature is___________________?

   A. Cementite
   B. Pearlite
   C. Martensite
   D. Ferrite

9. In the acid Bessemer process, the hot metal should have the following composition ?

   A. S < 0.05% and P < 0.05%
   B. S < 0.05% and P < 1.5%
   C. S 1.5%
   D. S > 1.5% and P < 0.05%

10. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?

    A. Aqueous tension
    B. Saturated humidity
    C. Vapor pressure
    D. Absolute humidity