Science — Class 9 builds the foundational vocabulary of physics, chemistry, and biology that recurs across UPSC Prelims general science and the science-and-technology dimension of GS3. These Class 9 Science NCERT notes for UPSC anchor the concepts an aspirant must hold cold before tackling current developments in health, food security, and the environment.

What the book covers, by theme:

  • Matter and chemistry: states and behaviour of matter, mixtures and purity, atoms and molecules, and the structure of the atom.
  • Cells and life: the cell as the fundamental unit of life, plant and animal tissues, and diversity in living organisms.
  • Physics of motion and energy: force and laws of motion, gravitation, work, energy and power, and sound.
  • Health and the environment: why we fall ill, natural resources, and improvement in food resources.

For UPSC, this book is core Prelims preparation, supplying the science base for GS3 health, ecology, and food-security questions.