Mechanical Operations
Pick out the wrong statement pertaining to the turbine agitator.

Generally, the diameter of the agitator is kept between l/3rd to l/6th of the tank diameter while the blade length is l/4th of agitator diameter (with central disc, it is l/8th of the agitator diamete
Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow
Turbine agitator should be located at a height not less than one agitator diameter length from the bottom. If the depth of liquid in the tank is more than twice the agitator diameter, two agitators sh
Recommended peripheral speed for the turbine agitator is 200-250 metres/minute

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Mechanical Operations
For a non-spherical particle, the sphericity

Is always less than 1
Has the dimension of length
Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle
Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle

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