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Chemical Engineering :: Chemical Engineering Basics

  1. __________ can replace tungsten in high speed steel.

  2. A.
    Chromium
    B.
    Vanadium
    C.
    Cobalt
    D.
    Molybdenum

  3. Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.

  4. A.
    300
    B.
    800
    C.
    1400
    D.
    2000

  5. Fatigue strength of a material can not be increased by

  6. A.
    cold working
    B.
    hot working
    C.
    shot peening
    D.
    any of these

  7. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

  8. A.
    tensile strength.
    B.
    compressive strength.
    C.
    Young's modulus.
    D.
    thermal co-efficient of expansion.

  9. Out of the following the refractive index is the highest for

  10. A.
    glass
    B.
    diamond
    C.
    brine
    D.
    kerosene

  11. Function of blow down valve in a boiler is to

  12. A.
    maintain the drum level.
    B.
    keep the drum pressure constant.
    C.
    drain out the sludge from the drum.
    D.
    empty the boiler during shutdown.

  13. Insulation of liquid surface can be achieved by __________ on top of its surface.

  14. A.
    floating hollow polypropylene spheres
    B.
    spraying alumina powder
    C.
    putting cement
    D.
    none of these

  15. Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50 wt% B is

  16. A.
    R ln 2
    B.
    -R ln 2
    C.
    3 R ln 2
    D.
    -3R ln 2

  17. Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

  18. A.
    hexagonal close, packed (hcp)
    B.
    face centred cubic (fcc)
    C.
    body centred cubic (bcc)
    D.
    simple cubic

  19. Cadmium in zinc leach liquor is removed by cementation using

  20. A.
    zinc
    B.
    iron
    C.
    nickel
    D.
    copper