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Chemical Engineering :: Mechanical Operations

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

  1. Use of grinding aids results in the

    2. A.
    enhanced production rate.
    B.
    finer products.
    C.
    both (a) & (b).
    D.
    neither (a) nor (b).

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  2. A belt conveyor used for the transportation of materials can

    3. A.
    run upto 1 km.
    B.
    travel at a speed upto 300 metres/minute.
    C.
    handle materials upto 5000 tons/hr.
    D.
    all (a), (b) and (c).

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  3. Which of the following is not used as a surface active agent in a flocculation operation?

    4. A.
    Sodium silicate
    B.
    Quartz
    C.
    Lime
    D.
    Alumina

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  4. __________ mill is not a revolving mill.

    5. A.
    Pebble
    B.
    Compartment
    C.
    Cage
    D.
    Tube

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  5. For the transportation of ultrafine particles, the equipment used is a........conveyor.

    6. A.
    belt
    B.
    pneumatic
    C.
    screw
    D.
    none of these

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  6. During filtration operation, the filtrate encounters the resistance of the

    7. A.
    filter medium.
    B.
    cake.
    C.
    channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium.
    D.
    all (a), (b) and (c)

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  7. Filtration rate does not depend upon the

    8. A.
    pressure drop & area of filtering surface.
    B.
    resistance of the cake & the septum.
    C.
    properties of the cake & the filtrate.
    D.
    none of these.

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  8. Which of the following is a fine crusher?

    9. A.
    Blake jaw crusher
    B.
    Gyratory crusher
    C.
    Toothed roll crusher
    D.
    Dodge jaw crusher

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  9. __________ is a cohesive solid.

    10. A.
    Wheat
    B.
    Sand
    C.
    Wet clay
    D.
    none of these

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  10. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

    11. A.
    3 to 4
    B.
    8 to 10
    C.
    10 to 15
    D.
    15 to 20

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