A single chlorine atom or free radical can break down over 100,000 molecules of ozone( O₃) in the stratosphere before it is deactivated.
The molecule of chlorine can break ____ molecules of ozones :
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Question context
This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.