Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher ?

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At low Reynold’s number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5: Power number Re = ρ N D2/μ: Reynold’s number N is the impeller rotational speed, and D is the impeller diameter ?

A. Po ∝ Re-1.0 B. Po ∝ Re0.0 C. Po ∝ Re0.5 D. Po ∝ Re1.0...

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 ?

A. Cresylic acid B. Copper sulphate C. Calcium carbonate D. Sodium carbonate...

Wheat is ground into flour in a___________________?

A. Hammer crusher B. Roller crusher C. Impact mill D. Fluid energy mill...

The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?

A. 2 B. √2 C. 1.5 D. √3...

For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the ______________ filter?

A. Plate & frame B. Shell & leaf C. Sand D. Rotary vacuum...