The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was: — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Step 1: In the upper atmosphere (stratosphere), solar ultraviolet (UV) radiation breaks down diatomic oxygen molecules (O2) into highly reactive oxygen atoms (O). Step 2: These individual oxygen atoms readily combine with intact oxygen molecules (O2) in the presence of a third body to form ozone (O3). Step 3: Therefore, the natural formation of the ozone layer is driven by the interaction of UV radiation with oxygen, corresponding to option (b).