Q. Which of the following statement is NOT correct about black carbon?

[A] It warms the Earth by absorbing heat in the atmosphere and by reducing albedo.

[B] It disrupts cloudiness and monsoon rainfall and accelerates melting of mountain glaciers such as the Hindu Kush-Himalayan glaciers.

[C] Black carbon stays in the atmosphere for years.

[D] It is a form of particulate air pollutant, produced from incomplete combustion.

Answer: C
Notes:

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. Black carbon stays in the atmosphere for only several days to weeks. 
  • Thus the effects of BC on the atmospheric warming and glacier retreat disappear within months of reducing emissions. 

Source: Shankar