11th Class Physics Physical World / भौतिक जगत Question Bank 11th CBSE Physics Mathematical Tools, Units & Dimensions

  • question_answer
    Why is graphite used as lubricant?

    Answer:

    In graphite carbon atoms are arranged in layers. These layers are held together by weak van der Waals force. Different layers can slide one over the other. This is why graphite is used as solid lubricant.  


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