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MPPSC (MP PCS) 2017 · Question 69 of 100

Which of the following is also used as a lubricant?

current-affairs

  1. ACuprite
  2. BGraphiteCorrect
  3. CHaematite
  4. DCryolite

Answer: B. Graphite

Explanation

Graphite is the pure crystalline carbon of carbon, it is used as lubricant; its crystals are arranged in the layers of carbon atoms in the carbon compounds in the crystals, due to the presence of weak vandervals force in their layers, the graphite is soft and lubricant.

Source: MPPSC Prelims 2017 GS Paper-I (evidyarthi English solved compilation; answers per compilation)

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