41. Which of the following is a batch sedimentation equipment?
42. The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter.
43. The main size reduction operation in ultrafine grinders is
44. Which of the following is not accomplished by agitation of liquids in agitators?
45. __________ centrifuge is the most suitable for separation of non-friable crystals.
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