Ozone & Protocols
Environment · ओज़ोन और प्रोटोकॉल
📋Quick Overview
Key facts about Ozone & Protocols for RRB NTPC, SSC CGL, and other competitive exams. These are frequently asked in the GK section and mastering them ensures easy marks.
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Ozone Layer — Stratosphere (15-35 km) — Absorbs 97-99% of UV radiation
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Ozone formula — O₃ — Three oxygen atoms — good ozone in stratosphere
📖Ozone & Protocols
| Name | Detail | Key Fact |
|---|---|---|
| Ozone Layer | Stratosphere (15-35 km) | Absorbs 97-99% of UV radiation |
| Ozone formula | O₃ | Three oxygen atoms — good ozone in stratosphere |
| CFC | Chlorofluorocarbons | Main ozone-depleting substance — used in ACs/fridges |
| Montreal Protocol | 1987 | Ban CFCs — most successful environmental treaty |
| Kigali Amendment | 2016 | Phase down HFCs (potent greenhouse gases) |
| Ozone Day | 16 September | International Day for Preservation of Ozone Layer |
| Ozone hole | Antarctica | Discovered 1985 — thinning over South Pole |
| Dobson Unit | Measures ozone | 1 DU = 0.01 mm ozone at STP |
📝Key Points
- •Ozone Layer: Stratosphere (15-35 km): Absorbs 97-99% of UV radiation
- •Ozone formula: O₃: Three oxygen atoms — good ozone in stratosphere
- •CFC: Chlorofluorocarbons: Main ozone-depleting substance — used in ACs/fridges
- •Montreal Protocol: 1987: Ban CFCs — most successful environmental treaty
- •Kigali Amendment: 2016: Phase down HFCs (potent greenhouse gases)
- •Ozone Day: 16 September: International Day for Preservation of Ozone Layer