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Question

The oxides of carbon, nitrogen and sulphur that are released on burning fossil fuels are ______.

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
acidic oxides

Oxides Nature from Fossil Fuels

Burning fossil fuels releases various gases, including oxides of carbon, nitrogen, and sulfur.

  • Oxides of carbon, such as carbon dioxide (\(CO_2\)), react with water to form carbonic acid (\(H_2CO_3\)).
  • Oxides of nitrogen, like \(NO_2\), react with water and oxygen to form nitric acid (\(HNO_3\)).
  • Oxides of sulfur, primarily sulfur dioxide (\(SO_2\)) and sulfur trioxide (\(SO_3\)), react with water to form sulfurous acid (\(H_2SO_3\)) and sulfuric acid (\(H_2SO_4\)), respectively.

Classification of Oxides

Since these oxides react with water to form acids, they are classified as acidic oxides. These acidic oxides contribute significantly to environmental issues like acid rain.

Therefore, the oxides of carbon, nitrogen, and sulfur released on burning fossil fuels are acidic oxides.

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