Infrastructure

This section defines infrastructure and distinguishes between economic and social types. UPSC tests the conceptual difference: economic infrastructure (transport, power, communication) directly impacts production, while social infrastructure (education, health, housing) indirectly improves human capital. It is crucial to note that social infrastructure investments have a longer gestation period. A common trap is assuming that because health is a public good, its infrastructure has no direct economic output; in reality, it directly boosts labor productivity.

Analyzes the composition and geographic distribution of India's infrastructure. It discusses the sharp rural-urban disparities, where rural populations still rely on traditional biomass (wood, dung) for energy and lack access to clean tap water. The section highlights that India spends a relatively low percentage of its GDP on infrastructure (around 30% investment rate overall, but specific budgetary allocation for infrastructure development has historically hovered around 5-8% of GDP, far below China's 44% in its peak growth phase). You can skip the absolute statistical figures from the 2001 census, but must focus on the trends of privatization in infrastructure provisioning.

Highly critical section covering commercial (coal, petroleum, natural gas, electricity) versus non-commercial (firewood, agricultural waste, dried dung) energy sources. Focus on the sectoral consumption of commercial energy in India, where the industrial sector is the largest consumer (about 38-42%), followed by transport, households, and agriculture. It details the chronic challenges of the power sector: high Transmission and Distribution (T&D) losses exceeding 20%, financial bankruptcy of State Electricity Boards (SEBs), and the gap between installed capacity and actual generation. Skip outdated data tables on specific power plant capacities but thoroughly memorize the share of thermal vs hydro vs renewable sources.

Evaluates public health infrastructure as a core social infrastructure component. Focus on the three-tier health system: Primary (PHCs, sub-centres), Secondary (CHCs, district hospitals), and Tertiary (specialized research institutes like AIIMS). It highlights the Indian Systems of Medicine (ISM) consisting of AYUSH (Ayurveda, Yoga, Unani, Siddha, Naturopathy, Homeopathy). It exposes key statistics: India's public health expenditure is extremely low at around 1.2% to 1.5% of GDP (compared to the targeted 2.5% under the National Health Policy 2017), leading to massive Out-of-Pocket Expenditure (OOPE) which forces millions into poverty annually. Skip old disease-specific eradication dates, but focus on broad demographic indicators like Infant Mortality Rate (IMR) and Maternal Mortality Ratio (MMR).