31. Pick out the wrong statement pertaining to the turbine agitator.
32. A gravity decanter is meant for the separation of two __________ density.
33. The reduction ratio for fine grinders is
34. Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)?
35. Addition of filter aid to the slurry before filtration is done to ...... of the cake.
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