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 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 9.0 kWh/ton 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 9.0 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not a non-metalliferous mineral? Calcite Cassiterrite Fluorspar Quartz Calcite Cassiterrite Fluorspar Quartz ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of sherical particles is proportional to (where, Dp = diameter of particle). D²p Dp 1/Dp 1/D²p D²p Dp 1/Dp 1/D²p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In filtration, the use of 'filter aid' helps in Reducing the filtration pressure Enhancing the cake porosity in case of a dense impermeable cake Accelerating the rate of filtration Deplugging the filter medium Reducing the filtration pressure Enhancing the cake porosity in case of a dense impermeable cake Accelerating the rate of filtration Deplugging the filter medium ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the Electro-static precipitator Cyclone separator Venturi atomiser Gravity settling chamber Electro-static precipitator Cyclone separator Venturi atomiser Gravity settling chamber 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
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