Multiple choice general knowledge science & technology

Which of the following is used in pencils?

  1. Graphite

  2. Silicon

  3. Charcoal

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

Graphite is used in pencil cores mixed with clay - the material we call pencil 'lead' contains no actual lead. Charcoal is used in charcoal pencils but not standard writing pencils. Silicon and phosphorus have no role in pencil manufacturing.

Keep practicing — related questions