Mechanical Operations The specific surface of sherical particles is proportional to (where, Dp = diameter of particle). Dp D²p 1/D²p 1/Dp Dp D²p 1/D²p 1/Dp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Cement clinker is reduced to fine size by a Ball mill Hammer mill Roll crusher Tube mill Ball mill Hammer mill Roll crusher Tube mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Froth floatation is the most suitable for treating Sulphide ores None of these Quartzite Iron ores Sulphide ores None of these Quartzite Iron ores ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Helical screw agitator is used for Mixing highly viscous pastes Mixing liquids at very high temperature (> 250 °C) None of these Blending immiscible liquids Mixing highly viscous pastes Mixing liquids at very high temperature (> 250 °C) None of these Blending immiscible liquids ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) 2 D D 1.5 D 0.5 D 2 D D 1.5 D 0.5 D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration When half the filtrate has been obtained At the end of filtration At the end of filtration, but decreases with time subsequently At time zero When half the filtrate has been obtained At the end of filtration At the end of filtration, but decreases with time subsequently At time zero ANSWER DOWNLOAD EXAMIANS APP
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