Which of the following minerals is not subjected to magnetic separation method ?

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Toothed roll crushers achieve size reduction by___________________?

A. Tearing (shear) and compression B. Impact and attrition C. Both A. & B. D. Neither A. nor B....

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

A. Sodium silicate B. Quartz C. Lime D. Alumina...

Pick out the wrong statement?

A. Close circuit grinding is more economical than open circuit grinding B. Cod oil, beef tallow or aluminium stearates are used as grinding aids in cement ‘industries’ C. The equipment used for the removal of traces of solids from a liquid is called a classifier D. Size enlargement is a mechanical operation exemplified by medicinal … Pick out the wrong statement?Read More...

Temperature of the product during ultrafine grinding_____________________?

A. Increases B. Decreases C. Remain constant D. May increase or decrease; depends on the material being ground...

The inlet pressure in a constant rate filtration____________________?

A. Increases continuously B. Decreases gradually C. Remains constant D. None of these...