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JEE Main levelSingle correct optionDifficulty 2 of 3pn188

Which statement about the conversion is correct?

  1. AIt is endothermic and ozone is thermodynamically less stable than oxygen
  2. BIt is endothermic, so ozone is more stable than oxygen
  3. CIt is spontaneous at room temperature and needs no energy input
  4. DIt is exothermic and ozone is more stable than oxygen

Answer: A

Ozone is formed from dry by a silent electric discharge, which supplies energy because for the conversion is positive. Ozone lies higher in energy than , so it decomposes readily to .
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