Question

witch of the following are not friction friendly- a) oil b) iron powder c) graphite d) water

Answer 1

iron Powder is the ryt answer

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Answer 2

Iron powder is the right answer and it has several uses and in case of production of magnetic alloys and certain types of steels.

This should formed as a whole from several other irons. It is not actually friction actually and thus it denotes product comparison by means of electrolytic iron powder.