UPSC CSE Mains GS-3 2021 Questions Q.1) Explain the difference between computing methodology of India’s Gross Domestic Product (GDP) before the year 2015 and after the year 2015. (Answer in 150 words) Q.2) Distinguish between Capital Budget and Revenue Budget. Explain the components of both these Budgets. (Answer in 150 words) Q.3) How did land reforms in some parts of the country help to improve the socio-economic conditions of marginal and small farmers? (Answer in 150 words) Q.4) How and to what extent would micro-irrigation help in solving India’s water crisis? (Answer in 150 words) Q.5) How is the S-400 air defence system technically superior to any other system presently available in the world? (Answer in 150 words) Q.6) Explain the purpose of the Green Grid Initiative launched at the World Leaders Summit of the COP26 UN Climate Change Conference in Glasgow in November 2021. When was this idea first floated in the Interna...