Question

look out for news paper on oil.cut these and make a collage.put up a chart in your classroom.also writeyoir own views on these reports

Answer 1

Mineral oils, which are petroleum-based, first saw use in cutting applications in the late 19th century. These vary from the thick, dark, sulfur-rich cutting oils used in heavy industry to light, clear oils. Semi-synthetic coolants, also called soluble oil, are an emulsion or microemulsion of water with mineral oil.

Answer 2

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