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Mechanical Operations

Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

0.5
√3
√2
1

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Mechanical Operations
For spheres, the specific surface shape factor is given by

√(AD/V)
A/V
AD/V
D/V

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Mechanical Operations
Which of the following is not used as filter aid?

Rice husk
Asbestos
Purified wood cellulose
Diatomaceous earth

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Mechanical Operations
Reciprocal of sphericity is termed as the

Specific surface ratio
Surface area per unit mass
Sauter diameter
Shape factor

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Mechanical Operations
Maximum size reduction in a fluid energy mill is achieved by

Compression
Cutting
Interparticle attrition
Impact

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Mechanical Operations
Which of the following oxides is not present in hematite iron ore?

Manganese oxide
Calcium oxide
Cobalt oxide
Titanium oxide

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