Multiple choice

What is the percentage of lead in lead pencil?

  1. 0%

  2. 25%

  3. 50%

  4. 100%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Despite the name, 'lead pencils' contain zero percent lead. The core is actually made of graphite (a form of carbon) and clay. The misnomer dates back to the 16th century when graphite was mistaken for a form of lead. Modern pencils use graphite, not lead.

Keep practicing — related questions