Understand photochemical smog for UPSC. Learn its formation, components, difference from classical smog, impacts on health, crops, materials and control measures.
Understand sand mining in India for UPSC. Learn its meaning, causes, environmental impacts, illegal sand mining, sand mafia, regulatory challenges and way forward.
Understand water crisis in India for UPSC. Learn its causes, groundwater depletion, pollution, regional imbalance, impacts, governance gaps and way forward.
Understand wetlands conservation for UPSC. Learn wetlands meaning, Ramsar sites, wise use concept, importance, causes of degradation, impacts, challenges and way forward.
Understand factor cost, basic prices and market prices for UPSC. Learn GVA at basic prices, GDP at market prices, production taxes, product taxes and key formulae.
Understand National Income Accounting for UPSC. Learn GDP, GNP, NFIA, NNP, NDP, Personal Income, Personal Disposable Income and key national income formulae with examples.
Check UPSC Prelims 2026 Result, official result PDF, roll number list, steps to download, qualifying status and next steps for UPSC Mains preparation.
Explore the UPSC Ethics Hub for GS-4 with Ethics notes, previous year questions, answer writing drills and case study practice lab for UPSC Mains preparation.
