Which of the following is not primary pollutant__________________?
Correct answer: D. H2SO4
- A. SO3
- B. CO
- C. NO
- D. H2SO4
Explanation
Sulphuric acid is generally a secondary pollutant because it forms in the atmosphere when sulphur oxides are oxidised and react with water. Students may choose SO3, but SO3 can be emitted directly as a primary pollutant even though it can also participate in secondary formation.
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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
443 free Gases MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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