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Mechanical Operations

Mechanical Operations
Mixing of plastic solids is generally facilitated by

None of these
Dispersion
Kneading
Mastication

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Mechanical Operations
For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns.

5
500
5000
50

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Mechanical Operations
A widely used size reduction equipment for __________ is Bradford breaker.

Iron core
Coal
Talc
Wheat

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Mechanical Operations
increasing the capacity of a screen __________ the screen effectiveness.

Decreases
Does not effect
Increases
None of these

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Mechanical Operations
The opening of a 200 mesh screen (Taylor series) is

0.0074 mm
0.0047 cm
0.0074 cm
74 mili-microns

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Mechanical Operations
Which of the following is a vacuum filter?

Batch basket centrifuge
Tank filter (Nutsch filter)
Filter press
Rotary disc filter

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