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Mechanical Operations

Mechanical Operations
Pine oil used in froth floatation technique acts as a/an

Frother
Modifier
Activator
Collector

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Mechanical Operations
Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?

Copper sulphate
Calcium carbonate
Sodium carbonate
Cresylic acid

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Mechanical Operations
Diatomaceous earth is a/an

Filter medium
Catalyst
Filter aid
Explosive

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Mechanical Operations
Separation of materials into products based on the difference of their sizes is called

Sizing
Classification
Sorting
Flocculation

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Mechanical Operations
Ribbon blenders are exclusively meant for

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

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Mechanical Operations
In case of a hammer crusher, the final product size depends on the

Rotor speed
All of these
Clearance between hammer & grinding plates
Feed rate

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