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Mechanical Operations

Mechanical Operations
200 mesh seive size corresponds to __________ microns.

200
154
24
74

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Mechanical Operations
Diatomaceous earth is a/an

Catalyst
Explosive
Filter medium
Filter aid

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Mechanical Operations
__________ centrifuge is the most suitable for separation of non-friable crystals.

Suspended batch basket
Disc-bowl
Tubular bowl
Perforated horizontal basket continuous

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Mechanical Operations
Which of the following is used for primary crushing of very hard lumpy materials?

Gyratory crusher
Tube mill
Ball mill
Toothed roll crusher

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Mechanical Operations
Gelatinous solid (which plug the septum) can be filtered by a __________ filter.

Precoat
Plate and frame
Sparkler
Vacuum leaf

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Mechanical Operations
During size reduction by a jaw crusher, the energy consumed decreases with the

None of these
Decreasing machine capacity
Increasing size of feed at constant reduction ratio
Decreasing size of product at constant size of feed

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