Mechanical Operations Additives used for promoting the floccula-tion of particles is a/an Electrolyte Neither A nor B Both A & B Surface active agent Electrolyte Neither A nor B Both A & B Surface active agent ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is None of these 0.4 0.6 0.1 None of these 0.4 0.6 0.1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 6.35 kWh/ton 9.0 kWh/ton 25.4 kWh/ton 18 kWh/ton 6.35 kWh/ton 9.0 kWh/ton 25.4 kWh/ton 18 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its None of these Easier grindability Poor grindability High power consumption in grinding None of these Easier grindability Poor grindability High power consumption in grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ is the most commonly used 'filter aid'. Diatomaceous earth Fuller's earth Vermiculite Semi-plastic clay Diatomaceous earth Fuller's earth Vermiculite Semi-plastic clay ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to The size reduction ratio None of these The change in volume due to crushing The new surface created The size reduction ratio None of these The change in volume due to crushing The new surface created ANSWER DOWNLOAD EXAMIANS APP
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