Air Pollution — Prelims Strategy
Prelims Strategy
For Prelims, the strategy for air pollution should focus on factual accuracy and conceptual clarity. Aspirants must thoroughly understand the types of pollutants (PM2.5, PM10, NOx, SOx, CO, O3, VOCs), distinguishing between primary and secondary pollutants.
Memorize the key sources for each pollutant. Crucially, know the legal framework: the Air (Prevention and Control of Pollution) Act, 1981 (year, main provisions, bodies established), Environment (Protection) Act, 1986 (umbrella nature), and the role of NGT.
Be familiar with policy initiatives: NCAP (year, targets, base year, non-attainment cities), BS emission norms (BS-IV vs. BS-VI, key differences, implementation year), GRAP (stages, triggers), Ujjwala Yojana, FAME India.
Understand measurement parameters like AQI (pollutants covered, ranges, categories) and NAAQS (pollutants covered). International agreements like the Montreal Protocol (purpose, year) and Paris Agreement (link to climate change and co-benefits for air quality) are also important.
Pay attention to landmark judgments (M.C. Mehta, Vardhaman Kaushik) and their key principles. Vyyuha recommends creating flashcards for pollutant characteristics, policy details, and legal provisions.
Practice MCQs that test your ability to differentiate between similar concepts and recall specific facts, including trap explanations to avoid common mistakes.