Important Topics to Cover in Science Class 10 CBSE



A student’s success in the Class 10 Board Exams marks a significant turning point in their lives, and science is a prerequisite for careers in engineering and medicine. So, to master this subject, one needs to concentrate on logical learning rather than studying by rote. With a deep comprehension of the subject and the necessary preparation, students can earn good grades in science.

Important Topics to Cover in Science Class 10 CBSE

Here is a list of some of the most important topics from every chapter to remember when prepping for your examinations

Chapter 1 – Chemical Reactions and Equations

  • Chemical Reactions
  • Decomposition Reaction
  • Displacement Reaction
  • Oxidation and Reduction
  • Rancidity

Expected weightage – 5 Marks

Chapter 2 – Acids, Bases and Salts

  • Significance of pH in daily life
  • Difference Between Acid and Base
  • Properties of Bases
  • Base Meaning
  • Weak Base
  • Distinction Between Baking Soda and Baking Powder
  • Dipole Moment

Expected weightage – 3 Marks

 Chapter 3 – Metals and Non-Metals

  • Physical Properties of Metals and Non-Metals
  • Non-Metals
  • Occurrence of Metals
  • Refining of Metals
  • Metallurgy
  • Formula and Equation

Expected weightage – 7 Marks

Chapter 4 – Carbon and Its Compounds

The chapter carbon and compounds class 10 notes will help students grasp the essential ideas of carbon compounds and the concepts of isomerisation and types of alcohol. 

  • Versatile Nature of Carbon
  • Soaps and Detergents
  • Organic Compounds
  • Combustion Reaction
  • Tetravalency of Carbon
  • Chemical Properties of Carbon Compounds

Expected weightage – 5 Marks

 Chapter 5 Periodic Classification of Elements

The 2022–2023 Board Examination Syllabus does not have Chapter 5 Periodic Classification of Elements.

 Chapter 6 – Life Processes

  • Autotrophic Nutrition
  • Heterotrophic Nutrition
  • Nutrition in Human Beings
  • Transportation in Plants
  • Excretion
  • Excretion in Plants
  • Excretion in Human Beings
  • Transportation in Human Beings

Expected weightage – 7 Marks

 Chapter 7 – Control and Coordination

  • Tropism in Plants
  • Movement Due to Growth in Plants
  • Types of Reflexes
  • Hormones in Animals

Expected weightage – 5 Marks

 Chapter 8 – How do Organisms Reproduce?

  • Fragmentation
  • Regeneration
  • Sexual Reproduction
  • Female Reproductive System
  • Tissue Culture
  • Reproductive Health

Expected weightage – 10 Marks

 Chapter 9 – Heredity and Evolution

  • Heredity
  • Mendel’s Contributions
  • Sex Determination
  • Dominant and Recessive Traits

Expected weightage – 3 Marks

 Chapter 10 – Light – Reflection and Refraction

This class 10 science light reflection and refraction notes cover the fundamental concepts of light reflection and refraction as well as the laws of reflection, the refractive index, the power of a lens, and light reflection. The following is a list of some crucial chapter topics:

  • Reflection and Refraction
  • Total Internal Reflection
  • Refraction at Spherical Surfaces
  • Refraction through a Prism
  • Dispersion of Light by Prism
  • Refractive Index Formula

Expected weightage  – 7 Marks

Chapter 11 – Human Eye and Colorful World

  • Human Eye
  • Scattering of Light
  • Tyndall Effect
  • Myopia
  • Hypermetropia
  • The Human Eye

Expected weightage – 5 Marks

 Chapter 12 – Electricity 

  • Electric Current and Circuit
  • Ohm’s Law
  • Resistance
  • Resistivity of Materials
  • Resistors in Series
  • Resistors in Parallel
  • Heating Effect of Electric Current

Expected weightage – 8 Marks

 Chapter 13 – Magnetic Effects of Electric Current

  • Electric Motor
  • Fleming’s Left-Hand Rule
  • Magnetic Fields and Field Lines

Expected weightage – 5 Marks

 Chapter 14 – Sources of Energy

The 2022–2023 Board Examination Syllabus does not have Chapter 14 – Sources of Energy

Chapter 15 – Our Environment

  • Components of Ecosystem
  • Biodegradable and Non-Biodegradable Substances
  • Ozone Layer Depletion

Expected weightage – 3 Marks


If you religiously study these essential topics from all the chapters, you can score good marks in the science exam. Understand the concepts, be attentive, make study notes and practice regularly. 


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