Which of the following air pollutants is more dangerous for ozone layer ?
Correct answer: A. CFC
- A. CFC
- B. CO2
- C. CO
- D. Oxides of nitrogen
Explanation
CFCs release chlorine radicals in the stratosphere when broken down by ultraviolet radiation, and these radicals catalytically destroy ozone. Carbon dioxide and carbon monoxide are important pollutants or greenhouse gases but are not the principal direct cause of ozone-layer depletion. The likely distractor is oxides of nitrogen because they also participate in atmospheric reactions.
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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.
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