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CHEMISTRY CH15 Carbon and its Compounds — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceCHEMISTRY CH15 Carbon and its Compounds1 Mark
MCQ
Graphite is used as a lubricant in machines because
  • A
    it is a good conductor of electricity
  • B
    it is made of slippery layers and  has a high melting point
  • C
    it has a high density
  • D
    it is strong and soft
✓

Answer

it is made of slippery layers and has a high melting point

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