UPSC Themes

UPSC CSE Mains 2022 · GS3 · 10 marks · 150 words

Discuss in detail the photochemical smog emphasising its formation, effects and mitigation. Explain the 1999 Gothenburg Protocol.

Theme

T155 Air pollution: smog, WHO guidelines, NCAP

What UPSC asks in this theme

Questions ask why Delhi's pollution is worse than Mumbai or Kolkata, photochemical smog and the Gothenburg Protocol, WHO's 2021 guidelines, and NCAP.

What to cover

Writing the answer

These notes are for the whole theme, built from all 4 of its PYQs. UPSC does not publish model answers.

More PYQs from this theme

  1. GS32021

    Describe the key points of the revised Global Air Quality Guidelines (AQGs) recently released by the World Health Organisation (WHO). How are these different from its last update in 2005? What changes in India’s National Clean Air Programme are required to achieve revised standards?

  2. GS32020

    What are the key features of the National Clean Air Programme (NCAP) initiated by the government of India?

  3. GS12015

    Mumbai, Delhi and Kolkata are the three mega cities of the country but the air pollution is much more serious problem in Delhi as compared to the other two. Why is this so?

All 20 GS3 2022 questions · Technology, Economy, Environment, Security & Disaster Management · Report a typo