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Chemical Engineering :: Chemical Engineering Basics

  1. A good abrasive

  2. A.
    should be friable.
    B.
    should have low refractoriness.
    C.
    is made up of large size of crystals.
    D.
    should be soft.

  3. Out of the following, __________ pipe is the least corrosion resistant.

  4. A.
    mild steel
    B.
    copper
    C.
    wrought iron
    D.
    stainless steel

  5. In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.

  6. A.
    0.5
    B.
    1
    C.
    5
    D.
    20

  7. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?

  8. A.
    Propane and acetylene
    B.
    Propane and LPG
    C.
    Sewage gas and gobar gas
    D.
    B.F gas and coke oven gas

  9. Sheardising process is used for

  10. A.
    surface coating.
    B.
    heat treatment of high speed steel.
    C.
    cold working on metals.
    D.
    none of these.

  11. The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is

  12. A.
    conduction
    B.
    convection
    C.
    both'a' & 'b'
    D.
    radiation

  13. Which of the following is an inedible oil ?

  14. A.
    Corn oil
    B.
    Tallow oil
    C.
    Olive oil
    D.
    Cotton seed oil

  15. Light year is the unit of

  16. A.
    distance
    B.
    time
    C.
    intensity of light
    D.
    none of these

  17. Ingrannular corrosion occurs __________ stainless steel.

  18. A.
    in all types of steels except
    B.
    at the surface of
    C.
    along grain boundaries of
    D.
    in the core of

  19. In case of fluid moving machineries, the relationship between saturation temperature and pressure decides the process of

  20. A.
    water hammer
    B.
    cavitation
    C.
    flow separation
    D.
    turbulent mixing