Chemical Engineering MCQs

6108 MCQs (Page 244 of 611)

Attempt Chemical Engineering Quiz

For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the ______________ filter?

A. Plate & frame
B. Shell & leaf
C. Sand
D. Rotary vacuum

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Which of the following conveyors cannot be recommended for transportation of abrasive materials ?

A. Belt conveyor
B. Apron conveyor
C. Flight conveyor
D. Chain conveyor

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Mesh indicates the number of holes per_________________?

A. Square inch
B. Linear inch
C. Square foot
D. Linear foot

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Which of the following comes in the category of primary crusher for hard and tough stone ?

A. Jaw crusher
B. Cone crusher
C. Gyratory crusher
D. None of these

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Two particles are called to be equal settling, if they are having the same ?

A. Size
B. Specific gravity
C. Terminal velocities in the same fluid & in the same field of force
D. None of these

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For a non-spherical particle, the sphericity__________________?

A. Is defined as the ratio of surface area of a sphere having the same volume as the particle to the
ActUal surface area of the particle
B. Has the dimension of length
C. Is always less than 1

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Velocity of a small particle of diameter ‘Dp’ at a distance ‘r’ from the rotational axis of a cyclone rotating at an angular speed ‘ω’ is given by (the other symbols are as per standard notation) ?

A. [(dp/18). (ρs – ρ/μ)] ω2r
B. [(dp2/18). (ρs – ρ/μ)] ω2r
C. [(dp/18). (ρs – ρ/μ)] ω2r2
D. [(dp2/18). (ρs – ρ/μ)] ω2r

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Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm) ?

A. Trough washer
B. Baum jig washer
C. Spiral separator
D. Froth floatation

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Apron conveyors are used for ___________________ ?

A. Heavy loads & short runs
B. Small loads & long runs
C. Heavy loads & long runs
D. None of these

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The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is_________________?

A. 1.5
B. 1
C. √2
D. None of these

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