Consider the following:

1. Carbon monoxide
2. Methane
3. Ozone
4. Sulphur dioxide

Which of the above are released into the atmosphere due to the burning of crop/biomass residue?

1. 1 and 2 only
2. 2, 3 and 4 only
3. 1 and 4 only
4. 1, 2, 3 and 4

Explanation

Option (d) is correct

• Burning of crop/biomass residues emit gases like sulphur dioxide (SO2), oxides of nitrogen (NOx), carbon dioxide (CO2), carbon monoxide (CO), black carbon (BC), organic carbon (OC), methane (CH4), volatile organic compounds (VOC), non-methane hydrocarbons (NMHCs), ozone (O3), and aerosols etc.

Answer: (d) 1, 2, 3 and 4; Difficulty Level: Easy