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_________________?

Related Mcqs:

1. 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

2. 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

3. Gross calorific value will be equal to the net calorific value for __________________?

   A. H2
   B. C2H2
   C. CO
   D. C2H6

4. Bomb calorimeter is used to determine the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.) ?

   A. GCV at constant pressure
   B. GCV at constant volume
   C. NCV at constant pressure
   D. NCV at constant volume

5. Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?

   A. Sensible
   B. Latent
   C. Sensible and latent
   D. None of these

6. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

   A. 400-500
   B. 900-1000
   C. 1400-1500
   D. 1700-1800

7. Gross and net calorific value of a fuel will be the same__________________?

   A. If its ash content is zero
   B. If its carbon content is very low
   C. If its hydrogen/hydrogen compound content is zero
   D. Under no circumstances

8. Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around _____________ atm?

   A. 3-5
   B. 25-30
   C. 60-65
   D. 95-100

9. Gross & net calorific value is the same for___________________?

   A. Blast furnace gas
   B. Coke oven gas
   C. L.D. converter gas
   D. None of these

10. Out of the following fuels, the difference between the net and gross calorific value is maximum in case of_________________?

    A. Pitch
    B. Fuel oil
    C. Blast furnace gas
    D. Bituminous coal