Which statement is wrong ?
Correct answer: A. the amount of ozone layer is greater in the region close to the equator
- A. the amount of ozone layer is greater in the region close to the equator
- B. ozone acts as filter for UV radiations
- C. in the equatorial region it acts as pollutant
- D. CFCs play effective role in removing O3 in the stratosphere
Explanation
The ozone layer is generally thinner over the equator than at high latitudes, so the statement that its amount is greater near the equator is wrong. Ozone absorbs ultraviolet radiation, and CFC-derived chlorine catalytically destroys stratospheric ozone; ozone near the ground can also act as a pollutant. The likely mistake is selecting c because students may confuse protective stratospheric ozone with harmful ground-level ozone.
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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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