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Mechanical Operations

Mechanical Operations
__________ mill is not a revolving mill.

Pebble
Tube
Cage
Compartment

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Mechanical Operations
Which of the following is not used as a filter medium in case of corrosive liquids?

Glass cloth
Nylon
Cotton fabric
Metal cloth of monel or stainless steel

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Mechanical Operations
Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m³)

3.6 W.V.ρ
3.6 W.D.V.ρ
3.6 W.D.V.
3.6 D.V.ρ

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Mechanical Operations
Cake resistance is

Independent of pressure drop
Important in the beginning of filtration
Decreased with the time of filtration
None of these

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Mechanical Operations
Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the

Coagulation
Sedimentation
Flocculation
Clarification

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Mechanical Operations
Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?

Jet mills
Micronizer
Fluid energy mill
All of these

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