The full form of the secondary air pollutant PAN is

GPSC AE (Class 1 & 2) 2019

⭕ A. Peroxy Acetyl Nitrate

⭕ B. Peroxy Amine Nitrate

⭕ C. Photochemical Acetyl Nitrate

⭕ D. Photochemical Amine Nitrate

📚 Explanation:

PAN stands for Peroxy Acetyl Nitrate — a highly toxic secondary pollutant found in photochemical smog.

✔ It is formed when:
  • Hydrocarbons + NO₂ react in sunlight
  • Peroxyacyl radicals combine with nitrate radicals

✔ PAN causes:
🔹 Eye irritation 🔹 Headache 🔹 Reduced plant growth 🔹 Long-range transport of pollution

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👉 Therefore, the correct answer is: A. Peroxy Acetyl Nitrate

Key Points on PAN:

• ✔ PAN is a secondary air pollutant.
• ✔ Major component of photochemical smog.
• ✔ Highly irritating to eyes and lungs.
• ✔ Formed from VOCs + NOx in sunlight.