Science

Science (Class 6, NCERT) is the foundational science textbook that introduces biology, chemistry and physics through everyday phenomena — food, materials, plants, the human body, motion, light, electricity, magnets, water, air and waste. These Class 6 Science NCERT notes for UPSC build the conceptual base that later supports environment, science-and-technology and general-science questions.

What the book covers, grouped by theme:

• Food and nutrition: sources of food, components of food (nutrients), and a balanced diet.
• Materials and matter: sorting materials into groups, separation of substances, and changes around us.
• Living world: fibre to fabric, getting to know plants, body movements, and organisms in their surroundings.
• Physics basics: motion and measurement of distances, light, shadows and reflections, electricity and circuits, and magnets.
• Environment: water, air around us, and garbage management.

For UPSC, this book anchors basic general science and environment fundamentals tested in Prelims.

In NCERT's rationalised 2023-24 edition the book has eleven chapters. Five were dropped: "Food: Where Does It Come From?" (chapter 1 here), "Fibre to Fabric" (3), "Changes Around Us" (6), "Water" (14) and "Garbage In, Garbage Out" (16). The other eleven are renumbered: "Components of Food" (chapter 2 here) is chapter 1 there, and so on to "Air Around Us" (chapter 15 here), which is chapter 11. This site keeps all sixteen; the dropped chapters carry a "Retained chapter" notice, and each page names the NCERT books of higher classes it draws on.