Consider the following statements regarding Flue Gas Desulphurisation (FGD): 1. FGD is a pollution control technology used to remove sulfur dioxide from flue gases emitted primarily by coal-based thermal power plants. 2. Flue gas contains only carbon dioxide and water vapour and is considered non-polluting. 3. Sulphur dioxide in flue gas contributes to both particulate matter pollution and respiratory illnesses. Which of the above statements is/are correct? |ForumIAS

[A] 1 and 2 only

[B] 1 and 3 only

[C] 2 and 3 only

[D] 1, 2 and 3

Answer: B

Notes:

Explanation:

FGD is indeed used to remove sulfur dioxide (SO₂) from flue gases, especially in coal-based thermal power plants (TPPs) and waste incineration units.
Flue gas contains not just CO₂ and water vapour, but also CO, SO₂, NOx, particulate matter, and trace pollutants, many of which are harmful. So it is not non-polluting.
SO₂ in the atmosphere forms sulphate aerosols, which worsen PM pollution and cause respiratory illnesses.

Source: Environment (N.C.E.R.T)