Pick out the correct statement.

Angle of repose is always greater than the angle of slide

A hopper is a small bin with a sloping bottom

Answer

A silo is a short height vessel of very large diameter used for the storage of high volatile matter coal

Pine oil is used as a 'modifying agent' (for activating or depressing the adsorption of filming agents) in froth floatation process

Answer: Option B

Answer: Option B

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