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Mechanical Operations

Mechanical Operations
In froth floatation, chemical agent added to cause air adherence is called

Activator
Modifier
Collector
Frother

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Mechanical Operations
__________ are mixed using ribbon blenders.

Thick pastes
Dry powders
High viscosity liquids
Lumpy solids and low viscosity liquids

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Mechanical Operations
Gravity stamp mill is meant for the __________ crushing.

Intermediate
Primary
Ultrafine
Fine

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Mechanical Operations
Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle).

6.V/D.S
S/V
V/D.S
V/6D.S

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Mechanical Operations
Cartridge filters are termed as 'edge' filters, because of the fact that the

Solids are not deposited at the edge of the disk
Bulk of the solids are removed at the periphery of the disks
Disks have very sharp edge
None of these

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Mechanical Operations
Which one is a filter aid?

None of these
Convas fabric
Diatomaceous earth
Calcined lime

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