Pick out the correct statement?

Mechanical Operations 03/01/2022

A. Angle of repose is always greater than the angle of slide
B. A hopper is a small bin with a sloping bottom
C. A silo is a short height vessel of very large diameter used for the storage of high volatile
matter coal
D. Pine oil is used as a ‘modifying agent’ (for activating or depressing the adsorption of filming
agents) in froth floatation process

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