Q. Which of the following is/are source/s of Black Carbon?
1.Biomass burning
2.Cooking with solid fuels
3.Diesel exhaust
Choose the correct answer from below given codes:

[A] 1 only

[B] 1 and 2 only

[C] 2 and 3 only

[D] 1, 2 and 3

Answer: D

Explanation: Black carbon (BC) is a solid particle or aerosol, (though not a gas) contributes to warming of the atmosphere.

Black carbon, commonly known as soot, is a form of particulate air pollutant, produced from incomplete combustion. It consists of pure carbon in several linked forms.


  • biomass burning,
  • cooking with solid fuels, and
  • Diesel exhaust, etc.

Source: SHANKAR IAS Environment