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Mechanical Operations

Mechanical Operations
Which of the following clay mixing devices is vacuum operated for deairation of clay?

Pug mill
None of these
Banbery mixer
Muller-mixer

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Mechanical Operations
Sedimentation on commercial scale occurs in

Thickeners
Cyclones
Classifiers
Rotary drum filters

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Mechanical Operations
In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow.

Turbulent
Laminar
Plug
None of these

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Mechanical Operations
Chance process is used for the

Concentration of pyrites
Concentration of iron ore
Cleaning of coal
Water treatment

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Mechanical Operations
Ribbon blenders are exclusively meant for

Blending miscible liquids
Bath mixing
Non-flowing powder and thin pastes
Continuous mixing

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Mechanical Operations
A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is

0.5
0.58
0.62
0.68

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