Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Atoms, Elements & CompoundsNon-metal Elements
Which of the following is used in pencils as a lubricant?
- A.Talc
- B.Diamond
- C.Silica
- D.GraphiteCorrect answer
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Practice these MCQs in the appQuick fact: Graphite is used in pencils as a lubricant because its layered structure allows sheets to slide over each other easily, leaving marks on paper.