Aerated water contains A. SO2 B. NO2 C. H2 D. CO2

The correct answer is D. CO2.

Aerated water is water that

has been infused with carbon dioxide gas. This is done by forcing the gas into the water under pressure. The carbon dioxide dissolves in the water and forms carbonic acid, which gives aerated water its characteristic fizzy taste.

The other options are incorrect. Sulfur dioxide (SO2) is a gas that is produced by burning fossil fuels. It is a major air pollutant and can cause respiratory problems. Nitrogen dioxide (NO2) is another gas that is produced by burning fossil fuels. It is also a major air pollutant and can cause respiratory problems. Hydrogen (H2) is a colorless, odorless gas that is the simplest element. It is not found in aerated water.