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Mechanical Operations

Mechanical Operations
Ultrafine grinders operate principally by

Slow compression
Attrition
Cutting action
Impact

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Mechanical Operations
Pick out the material having minimum Rittinger's number.

Quartz
Calcite
Pyrite
Galena

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Mechanical Operations
The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be __________ cms.

20
2
12
8

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Mechanical Operations
Mixing of plastic solids is generally facilitated by

Dispersion
Mastication
None of these
Kneading

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Mechanical Operations
Which of the following is a fine crusher?

Gyratory crusher
Blake jaw crusher
Dodge jaw crusher
Toothed roll crusher

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Mechanical Operations
Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a

Mixer-extruder
Pug mill
Muller mixer
Banbury mixer

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