Why we are oil or grease on moving parts of the machine?
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The heat energy tends to damage theparts of machine. Oil works as a greasing material. Greasing material is used to reduce the friction between themoving parts of the machine. This property of Grease result in smooth movement of the machine or relative motion among the parts of the machine
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digesters?
In anaerobic sludge digesters, bacteria produce a vital mixture of gases like methane, hydrogen, sulphide and carbon dioxide. Anaerobic digestion is a bacterial process that breaks down organic material within the waste in the absence of oxygen.
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