Which of the following is used in pencils ?

  1. Phosphorus
  2. Charcoal
  3. Graphite
  4. Sulphur
Manish Listener Asked on 6th November 2014 in Chemistry.
Add Comment
2 Answer(s)


Basant Default Answered on 18th November 2014.
Add Comment

Pencil Lead is made up  of Graphite. Frenchman, Nicolas-Jacques Conte has evolved a procedure to make the pencil leads.

Nomenclature of pencil are done by H-B and Numeric basis. HB (“H” beckon hardness, “B” beckon blackness.) are two “Graphite” grading scale used to measure the hardness of pencil’s graphite core. Initially pencil were used a raw pieces of “Graphite” dug from the earth. Now Graphite is partially transformed to make pencils more durable, hard and bright marking.

Pushpendra Pal Dean Answered on 20th January 2015.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.