JEE Main levelSingle correct optionDifficulty 2 of 3ev068
Polar stratospheric clouds contribute to the Antarctic ozone hole mainly because their ice and acid particle surfaces
Asupply nitrogen oxides which protect ozone
Bremove CFCs from the stratosphere by rain-out
Cconvert reservoir species such as ClONOX2 and HCl into photolabile forms of chlorine
Dabsorb UV light and produce ozone
Answer: C
Reactions such as ClONOX2+HClClX2+HNOX3 occur on cloud-particle surfaces and release ClX2, which sunlight splits into Cl atoms. The clouds do not remove CFCs or generate ozone.