Which of the following gases is the main cause of acid rain ?
Correct answer: B. NO2
- A. CO
- B. NO2
- C. both a & b
- D. none of the above
Explanation
Nitrogen dioxide contributes to acid rain by reacting with atmospheric water and oxygen to form nitric acid and related acids; sulphur dioxide is also important but is not an option. CO does not form a major acid-rain acid, so c is the likely mistaken choice despite including NO2.
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About Real and Ideal Gases
An ideal gas is modelled as particles with negligible volume and no intermolecular attraction, obeying Boyle's, Charles's and Avogadro's laws through PV = nRT. Real gases deviate from this behaviour, especially at high pressure and low temperature, because particle volume and attractive forces matter; the van der Waals equation explains these corrections.
Practise Gases
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