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Chemical Engineering :: Mechanical Operations

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Mechanical Operations - Section 3
Mechanical Operations - Section 4
Mechanical Operations - Section 5
Mechanical Operations - Section 6
Mechanical Operations - Section 7
Mechanical Operations - Section 8
Mechanical Operations - Section 9

  1. Sphericity of raschig ring (whose length and diameter are equal) is

    2. A.
    >1
    B.
    <1
    C.
    1
    D.
    2

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  2. Mixing mechanism employed in a pan mixer is by

    3. A.
    mulling
    B.
    kneading
    C.
    dispersion
    D.
    none of these

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  3. Chance process is used for the

    4. A.
    cleaning of coal.
    B.
    concentration of iron ore.
    C.
    concentration of pyrites.
    D.
    water treatment

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  4. Which of the following screens has the maximum capacity ?

    5. A.
    Grizzlies
    B.
    Trommels
    C.
    Shaking screen
    D.
    Vibrating screen

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  5. Stamp mills are generally used for crushing

    6. A.
    iron ores
    B.
    gold ores
    C.
    talc
    D.
    diamond

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  6. In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow.

    7. A.
    plug
    B.
    turbulent
    C.
    laminar
    D.
    none of these

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  7. Which of the following is a batch sedimentation equipment ?

    8. A.
    Dust catcher
    B.
    Filter thickener
    C.
    Dry cyclone separator
    D.
    Rotary sprayer scrubber.

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  8. The most suitable equipment for the transportation of 200 mesh size particles is a

    9. A.
    bucket elevator
    B.
    pneumatic conveyor
    C.
    screw conveyor
    D.
    belt conveyor

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  9. Which of the following is not used as filter aid?

    10. A.
    Asbestos
    B.
    Diatomaceous earth
    C.
    Purified wood cellulose
    D.
    Rice husk

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  10. Raw materials are charged in the iron blast furnace using

    11. A.
    bucket elevator
    B.
    skip hoist
    C.
    screw conveyor
    D.
    none of these

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