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Chemical Engineering :: Chemical Engineering Basics

  1. Ganister contains maximum percentage of

  2. A.
    FeO
    B.
    SiO2
    C.
    MgO
    D.
    MnO2

  3. Nitrogen is not an essential component of

  4. A.
    protein
    B.
    urea
    C.
    oils & fats
    D.
    any of these

  5. In inventory control theory, the economic order quantity (EOQ) is the

  6. A.
    lot size corresponding to break even analysis.
    B.
    average level of inventory.
    C.
    optimum lot size.
    D.
    none of these.

  7. The main charge in blast furnace is usually

  8. A.
    iron ore & coke.
    B.
    iron ore, coke & air.
    C.
    limestone, coke & iron ore.
    D.
    limestone, sand & iron ore.

  9. The atmospheric temperature during melting of ice/snow (in the atmosphere)

  10. A.
    decreases
    B.
    increases
    C.
    remains same
    D.
    may increase or decrease ; depends on the altitude where snow melts

  11. At room temperature, F.C.C. crystal structure is observed in

  12. A.
    lead
    B.
    cupro-nickel
    C.
    titanium
    D.
    tungsten

  13. The basic function of the drum in a boiler is to

  14. A.
    act as a storage for feed water.
    B.
    act as a storage for steam.
    C.
    separate steam from water.
    D.
    remove settling impurities from steam.

  15. Pick out the wrong statement.

  16. A.
    The X-rays can not be deflected by electric field unlike cathode rays.
    B.
    The intensity of X-rays can be measured by ionisation current produced due to the ionisation of gas by X-rays.
    C.
    The quality of X-rays can be controlled by varying the anode-cathode voltage.
    D.
    Crystal structure of a material can be studied by an electron microscope.

  17. Colloids can be purified by

  18. A.
    dialysis
    B.
    reverse osmosis
    C.
    coagulation
    D.
    peptization

  19. The most prominent single cause of corrosion in boilertubes, drums, economisers and steam superheaters in a thermal power plant boiler is the

  20. A.
    water alkalinity & leakage.
    B.
    hydrazine addition during feed water treatment.
    C.
    release of non-condensable gas from water in the boiler.
    D.
    scale formation.