Home / Chemical Engineering / Fuels and Combustion :: Section 7

Chemical Engineering :: Fuels and Combustion

  1. Which of the following is not a by-product fuel?

  2. A.
    Producer gas
    B.
    Blast furnace gas
    C.
    Coke oven gas
    D.
    Refinery gas

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Lignite is

  4. A.
    a high rank coal.
    B.
    a coking coal.
    C.
    can be used for gasification and steam generation.
    D.
    a black banded coal which burns with a non-smoky yellowish flame.

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

  6. A.
    80 and 97
    B.
    95 and 100
    C.
    40 and 70
    D.
    25 and 97

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Naphthalene recovered from coke oven gas is used

  8. A.
    as moisture proof coating on fibres.
    B.
    as moth balls (insecticides).
    C.
    as a fuel in furnaces.
    D.
    for making electrodes.

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

  10. A.
    back draughting.
    B.
    banking.
    C.
    under pressurising.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Quantity of coke produced from metallurgical coal may be around __________ percent.

  12. A.
    30
    B.
    50
    C.
    75
    D.
    95

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.

  14. A.
    500
    B.
    750
    C.
    950
    D.
    1100

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Out of the following fuels, the difference between gross and net calorific value will be minimum in case of

  16. A.
    coke oven gas
    B.
    water gas
    C.
    natural gas
    D.
    blast furnace gas

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Fuel for a fast breeder nuclear reactor is

  18. A.
    plutonium
    B.
    uranium
    C.
    radium
    D.
    neptunium

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Which of the following gaseous fuels is likely to have the highest gross calorific value?

  20. A.
    Sewage gas
    B.
    LPG
    C.
    Producer gas
    D.
    Natural gas

    View Answer

    Workspace

    Discuss Discuss in Forum