Class 6 Social Science builds the foundational knowledge that UPSC GS1 stands on. The History book covers India's earliest civilisations (Harappan), Vedic society, Janapadas, Mahajanapadas, the Mauryan Empire, post-Mauryan developments, and the Gupta period — the exact chronology tested in Prelims. Geography covers Earth's physical structure and India's physical features. Civics introduces democracy, governance, and social equality — foundational for GS2.

Class 6 Science covers living organisms, food and nutrition, materials, motion, and electricity — concepts that appear in UPSC GS3 environment and science-technology questions.

Note on rationalised chapters: NCERT's rationalised 2023-24 edition (revised November 2022) dropped some chapters and merged others. This site keeps all the original chapters, because UPSC draws on the full original corpus. A chapter NCERT dropped carries a "Retained chapter" notice, and each page says what happened to it in the current edition.