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Geography Optional 300+ Score Pack · Model answer

Give a reasoned account of high level of pollution in North Indian cities as compared to South Indian cities.

  • UPSC 2019
  • Contemporary Issues

Modelled annual PM2.5 for twenty Indian cities by Sarath K. Guttikunda, Nishadh K.A. and Puja Jawahar (2019) settles the fact: Patna 122.2, Kanpur 114.1 and Jaipur 99.6 microgrammes per cubic metre against Chennai 57.5, Bengaluru 36.5 and Coimbatore 19.4 — only the two southern cities cleared the 40 µg/m³ annual standard.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • The Contrast, Measured Before It Is Explained
  • Criterion 1 — Topographic Enclosure Against Coastal Opening
  • Criterion 2 — Latitude and the Winter Temperature Regime
  • Criterion 3 — Ventilation Speed
  • Criterion 4 — A Different Source Mix
  • Criterion 5 — Emission Density

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