WBCS.LIVE practice question

How is carbon black obtained?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. By heating wood at high temperature in absence of air
  2. By heating coal at high temperature in absence of air
  3. By burning hydrocarbons in a limited supply of air
  4. By heating coal at high temperature in presence of air

Correct answer and explanation

Correct answer: By burning hydrocarbons in a limited supply of air