WAEC Chemistry 2010 Theory — Question 5

Question 5 of 46 from the West African Examinations Council (WAEC) Chemistry 2010 Theory paper, with the correct answer and a full explanation.

1(c)(i) Explain why: I. graphite is used as a lubricant; II. diamond is used as an industrial cutting tool.

Model answer

I. Graphite is used as a lubricant because it consists of planar layers which can slide over one another. II. Diamond is very hard, so it is used for making cutting tools.

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