Q. Pencil 'lead' is made up of

  • (A) Lampblack
  • (B) Lead oxide
  • (C) Charcoal
  • (D) Graphite
✅ Correct Answer: (D) Graphite

Published by Ram Sharma ⭐ 193.88K Points at 16-Nov-2021 05:17 pm in General Awareness

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