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Mechanical Operations

Mechanical Operations
Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a

Pug mill
Muller mixer
Banbury mixer
Mixer-extruder

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Mechanical Operations
In screen analysis, the notation +5 mm/-10 mm means particles passing through

10 mm screen and retained on 5 mm screen
Both 5 mm and 10 mm screens
Neither 5 mm nor 10 mm screen
5 mm screen and retained on 10 mm screen

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Mechanical Operations
Length/diameter ratio of a ball mill is

1.5
1
< 1
> 1

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Mechanical Operations
In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of __________ crushing.

Fine
Secondary
Primary
Ultrafine

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Mechanical Operations
Which of the following is not a revolving/tumbling mill used for size reduction?

Rod mill
Cage mill
Compartment mill
Pebble mill

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Mechanical Operations
A gravity decanter is meant for the separation of two __________ density.

Miscible liquids of same
Miscible liquids of different
Immiscible liquids of different
Immiscible liquids of same

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