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Mechanical Operations

Mechanical Operations
The distribution given by microscopic analysis of powder is

Volume
Area
Length
Number

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Mechanical Operations
For sizing of fine materials, the most suitable equipment is a

Shaking screen
Vibrating screen
Trommel
Grizzly

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Mechanical Operations
The sphericity of a solid particle of cubical shape is

(π/6)1/2
(π/6)1/3
π
π/3

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Mechanical Operations
The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is

?2
1
None of these
1.5

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Mechanical Operations
Which of the following is not used as a surface active agent in a flocculation operation?

Lime
Sodium silicate
Quartz
Alumina

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

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

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