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Mechanical Operations

Mechanical Operations
__________ mill is not a revolving mill.

Cage
Pebble
Tube
Compartment

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Mechanical Operations
The specific surface of sherical particles is proportional to (where, Dp = diameter of particle).

Dp
D²p
1/Dp
1/D²p

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Mechanical Operations
Shape factor for a cylinder whose length equals its diameter is

1.0
1.5
2.0
0.5

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Mechanical Operations
A. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end.

Pebble
Rod
Tube
Compartment

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

Activator
Frother
Collector
Modifier

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

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

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