Mercury is emitted into air by:
Burning coal
Burning garbage
Coal fire
Steam engine
As learnt in
Non - Degradable pollutant. -
They cannot be degraded, or break down very slowly by natural processes.
- wherein
Mercury, lead, DDT, plastics.
Mercury is a non- degradable pollutant which is emitted into air by burning garbage containing mercury.
Option 1)
Burning coal
Incorrect option
Option 2)
Burning garbage
correct option
Option 3)
Coal fire
Incorrect option
Option 4)
Steam engine
Incorrect option