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📘 NCERT Class 11 Geography – Chapter 2: The Origin and Evolution of the Earth | UPSC 2026 / PCS / Foundation Series

Welcome back future officers! 🚀
In this lecture, we’ll explore one of the most fascinating topics in Geography —
“Origin and Evolution of the Earth” from Class 11 NCERT (Fundamentals of Physical Geography).
This chapter explains how our universe, solar system, and Earth were formed, step-by-step — in simple Hinglish, perfectly suited for UPSC CSE 2026, State PCS, and Geography optional students. 🌍

🧭 What You’ll Learn in This Video

Complete NCERT Chapter 2 line-by-line explanation

Big Bang Theory – how the universe began

Formation of Stars, Galaxies & Solar System (Nebular Hypothesis)

Evolution of Earth – from hot ball to habitable planet

Formation of Atmosphere & Hydrosphere

Origin of Life on Earth – simple to complex organisms

Keywords, diagrams, and UPSC-style questions

📘 Topics Covered

✅ Origin of the Universe – Big Bang Theory
✅ Formation of Solar System – Nebular Hypothesis (Kant, Laplace, Chamberlain & Moulton)
✅ Stages in Evolution of the Earth
✅ Development of Earth’s Layers – Crust, Mantle, Core
✅ Evolution of Atmosphere & Oceans
✅ Emergence of Life and Geological Time Scale (Simplified)

💡 Why Watch This Lecture?

🔹 Builds strong conceptual clarity for UPSC GS Paper-1 & Geography Optional
🔹 Simplified Hinglish explanation with diagrams & examples
🔹 NCERT + UPSC integrated approach (Pre + Mains + Interview)
🔹 Includes short notes, mind-maps & factual boosters for quick revision

📚 Best For:

UPSC CSE Aspirants | State PCS | CUET | Geography Optional Beginners | School + College Students

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