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Mechanical Operations

Mechanical Operations
Which of the following is not categorised as a "mechanical operation"?

Size enlargement
Agitation
Humidification
Filtration

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Mechanical Operations
Gravity settling process is not involved in the working of a

Classifier
Hydrocyclone
Dorr-thickener
Sedimentation tank

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Mechanical Operations
A compressible cake has the

Same porosity throughout the cake thickness
Maximum porosity at the upstream side
Maximum porosity at the filter medium
None of these

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Mechanical Operations
Which of the following may prove unsuitable for filtering volatile liquids?

Gravity filter
Vacuum filter
Centrifugal filter
Pressure filter

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Mechanical Operations
Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines?

Tube mill
Pebble mill
Compartment mill
Rod mill

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Mechanical Operations
Which of the following is not a cutting machine?

Slitters
Tube mills
Dicers
Knife cutters

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