Multiple choice

Percentage of lead in lead pencils is

  1. 0

  2. 31 - 66

  3. 40

  4. 80
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

'Lead pencils' contain no actual lead metal. They are made of graphite (a form of carbon) mixed with clay. The name originated historically when graphite was mistaken for a form of lead. Graphite is still sometimes called 'black lead' in certain contexts, but modern pencils contain 0% lead.

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