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Chemical Engineering Basics-2 - Section-1
  1. Number of electrons in the outermost shell of a semi-conductor material is

    2. A.

     2
    B.

     4
    C.

     6
    D.

     8

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  2. Encyclopaedia of Chemical Technology has been

    3. A.

     Authored by Kirk Othmer
    B.

     Edited by Perry and Chilton
    C.

     Edited by Kirk Othmer
    D.

     Authored by Perry and Chilton

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  3. __________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.

    4. A.

     Stellite
    B.

     High speed steel
    C.

     Cermet
    D.

     Alnico

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  4. The hydraulic radius of a circular pipe of diameter 'd' flowing full is

    5. A.

     D/4
    B.

     D/2
    C.

     2d/3
    D.

     D/3

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  5. Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

    6. A.

     Invar
    B.

     Hastealloy
    C.

     Duralumin
    D.

     Monel metal

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  6. Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.

    7. A.

     Constantan
    B.

     Invar
    C.

     Pewter metal
    D.

     Monel metal

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  7. Softening of hardned steel is done by its

    8. A.

     Normalising
    B.

     Tempering
    C.

     Annealing
    D.

     Carburising

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

    9. A.

     Decreases
    B.

     Increases
    C.

     Remains same
    D.

     May increase or decrease ; depends on the altitude where snow melts

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  9. Dialysis is the process of separating substances in the

    10. A.

     Colloidal state from those present in the true solutions
    B.

     Colloidal state from those present in the suspensions
    C.

     Suspension from those present in the solutions
    D.

     None of these

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  10. The type of pump used for lifting large quantity of sewage is a __________ pump.

    11. A.

     Gear
    B.

     Centrifugal
    C.

     Reciprocating
    D.

     Plunger

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