Air Pollution — Prelims Strategy

Prelims Strategy

For Prelims, a strong factual foundation is non-negotiable. Begin by thoroughly understanding the definition, types (primary/secondary pollutants, classical/photochemical smog), and sources of air pollution.

Memorize the eight pollutants for AQI calculation and their respective health impacts. Pay close attention to key government initiatives: the National Clean Air Programme (NCAP) – its targets, scope, and non-attainment cities; Bharat Stage (BS) emission norms – their evolution and significance (BS-VI emission norms implementation); and schemes promoting electric vehicles (EVs).

Familiarize yourself with the Air (Prevention and Control of Pollution) Act, 1981, including the roles of CPCB and SPCBs. Understand the basic chemistry of major pollutants like NOx, SOx, PM, and O3, especially their formation mechanisms (e.

g., acid rain formation mechanism chemistry, smog formation types photochemical classical). Current affairs hooks, such as recent policy changes or Supreme Court interventions, are crucial. Practice MCQs that test conceptual clarity (e.

g., PM2.5 vs PM10 difference UPSC) and factual recall. Focus on distinguishing between similar concepts and identifying common traps. Create flashcards for key terms, acts, and targets. Regularly review the 'thirty_second_revision' and 'prelims_revision_notes' sections for quick recall.