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Chemical Engineering :: Chemical Engineering Basics

  1. The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their

  2. A.
    equivalent weight.
    B.
    (equivalent weight)2.
    C.
    molecular weight.
    D.
    (molecular weight)2.

  3. A material having good damping property is likely to have

  4. A.
    greater defect density.
    B.
    fine grained structure.
    C.
    lesser defect density.
    D.
    high tensile strength.

  5. Exposure to __________ accelarates the degradation of plastics.

  6. A.
    ultraviolet radiation
    B.
    high atmospheric temperature
    C.
    high ambient temperature
    D.
    damp atmosphere

  7. Steel produced from phosphatic iron is __________ in nature.

  8. A.
    malleable
    B.
    ductile
    C.
    brittle
    D.
    tough

  9. __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

  10. A.
    Vaneering
    B.
    Galvanising
    C.
    Electroplating
    D.
    Calorising

  11. Which of the following has the least oili-ness ?

  12. A.
    Mineral oils
    B.
    Vegetable oils
    C.
    Greases
    D.
    Animal oils

  13. Surface finish of casting does not depend upon the

  14. A.
    sand fineness.
    B.
    pattern finish.
    C.
    mould dressings.
    D.
    metal temperature.

  15. Load cells used for the measurement of weight has

  16. A.
    compact & rugged construction with an accuracy of 0.1 to 1%.
    B.
    no moving parts and incurs negligible deflection under load.
    C.
    provision of thermal compensation and is hermetically sealed.
    D.
    all 'a', 'b' & 'c'

  17. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.

  18. A.
    1800
    B.
    2000
    C.
    2400
    D.
    3000

  19. For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

  20. A.
    Reynolds number (based on sphere diameter) should be < 1.
    B.
    flow around the sphere should be in turbulent region.
    C.
    sphere must be metallic.
    D.
    fluid density should be constant.