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Mechanical Operations

Mechanical Operations
__________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution.

Rubbon blender
Tumbler
Banbery
Muller

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Mechanical Operations
Which of the following conveyors cannot be recommended for transportation of abrasive materials?

Flight conveyor
Belt conveyor
Apron conveyor
Chain conveyor

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Mechanical Operations
Sphericity of pulverised coal is

∞
>1
1

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Mechanical Operations
Filter medium resistance is that offered by the

Embedded particles in the septum
None of these
Filter cloth
Filter cloth and the embedded particle collectively

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Mechanical Operations
In froth floatation, chemical agent added to cause air adherence is called

Collector
Modifier
Activator
Frother

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Mechanical Operations
Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?

Calcium carbonate
Cresylic acid
Copper sulphate
Sodium carbonate

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