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Mechanical Operations

Mechanical Operations
Percentage of drum submerged in the slurry in case of rotary drum filter is

85
3
25
30

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Mechanical Operations
Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called

Froth floatation
Classification
Clarification
Thickening

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Mechanical Operations
Filter medium resistance is important during the __________ of filtration.

Early stages
Entire process
Final stages
None of these

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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?

Pebble mill
Tube mill
Rod mill
Compartment mill

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Mechanical Operations
To remove very small amount of tiny solid impurities from liquid, we use a

Vacuum filter
Coagulant
Pressure filter
Centrifugal filter

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Mechanical Operations
In the cyclone separator used for separation of dust from dust laden gas, the gas

Develops a helical motion inside the chamber
Enters the cyclone from the top
Both B and C
Is admitted tangentially at high velocity

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