Class 10 Science Notes with Important Question Answers

In Every students life Class 10 is considered as the turning point as far as educational journey is considered. Apart from attaining good marks in the CBSE Board Examination class 10 also help every student to make a choice for their desired stream thus guiding them to make foundation of better career. Keeping all this mind, It becomes very imperative for every student to study and understand every concept of Class 10 effectively and create a strong foundation and also score good marks.

Here on  you will find the most comprehensive Class 10 Science Notes along with important Question answers and tips. Every Science topic covered below covers notes for school exams, CBSE board exams and even Science Olympiads.Check the links given below for more information about each chapter given in the class 10 science syllabus.

 CBSE Class 10 Science Notes

Chemical reactions : Chemical equation, Balanced chemical equation, implication of a balanced chemical equation, types of chemical reactions : Combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction.

Chapter 1 – Chemical Reactions and Equations

Acids, bases and salts : Their de¿ nitions in terms of furnishing of H+ and OH-ions, General properties, examples and uses, concept of pH scale (De¿ nition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris

Chapter 2 – Acids, Bases and Salts

Metals and non metals : Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention.

Chapter 3 – Metals and Non-metals

Carbon compounds : Covalent bonding in carbon compounds. Versatile nature of carbon. Homologous series. Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydrocarbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, iv oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents

Chapter 4 – Carbon and Its Compounds

Periodic classification of elements : Need for classification, Early attempts at classification of elements (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic Table), Modern periodic table, graduation in properties, valency, atomic number, metallic and non-metallic properties.

Chapter 5 – Periodic Classification of Elements

Life processes : ‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants and animals.

Chapter 6 – Life Processes

Control and coordination in animals and plants : Topic movements in plants; Introduction of plant hormones; Control and coordination in animals; Nervous system; Voluntary, involuntary and reflex action; Chemical coordination; animal hormones.

Chapter 7 – Control and Coordination

Reproduction : Reproduction in animals and plants (asexual and sexual) reproductive health-need and methods of family planning. Safe sex vs HIV/ AIDS. Child bearing and women’s health.

Chapter 8 – How do Organisms Reproduce?

Heredity and Evolution : Heredity; Mendel’s contribution – Laws for inheritance of traits, Sex determination : Brief introduction; Basic concepts of evolution

Chapter 9 – Heredity and Evolution

Reflection of light by curved surfaces; Images formed by spherical mirrors, centre of curvature, principal axis, principal focus, focal length, mirror formula (Derivation not required), magnification. Refraction; Laws of refraction, refractive index. Refraction of light by spherical lens; Image formed by spherical lens; Lens formula (Derivation not required); Magnification. Power of lens.

Chapter 10 – Light Reflection and Refraction

Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lenses. Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life.

Chapter 11 – Human Eye and Colourful World

Electric current, potential difference and electric current. Ohm’s law; Resistance, resistivity, Factors on which the resistance of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life. Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R.

Chapter 12 – Electricity

Magnetic effects of current : Magnetic field, field lines, field due to a current currying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule, Electric Motor, Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule, Electric Generator, Direct Current. Alternating current : frequency of AC. Advantage of Ac over DC. Domestic electric circuits.

Chapter 13 – Magnetic Effects of Electric Current

Sources of energy : Different forms of energy, conventional and nonconventional sources of energy : Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy.

Chapter 14 – Sources of Energy

Our environment : Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances.

Chapter 15 – Our Environment

Management of natural resources : Conservation and judicious use of natural resources. Forest and wild life; Coal and Petroleum conservation. Examples of people’s participation for conservation of natural resources. Big dams; advantages and limitations; alternatives, if any. Water harvesting. Sustainability of natural resources.

Chapter 16 – Sustainable Management of Natural Resources


First Term UnitsMarks
I.Chemical Substances – Nature & Behaviour

Chapter 1.Chemical Reaction and Equations

Chapter 2. Acids ,Bases and Salts
Chapter 3. Metals and Non -metals
II.World of Living

Chapter 6.Life processes

Chapter 7. Control and co-ordination
IV.Effects of Current

Chapter 12. Electricity

Chapter 13. Magnetic Effects of  Electric Current
V.Natural Resources

Chapter 14.Sources of energy

Second Term UnitsMarks
I.Chemical Substances – Nature & Behaviour

Chapter 4. Carbon and its Compounds

Chapter 5.Periodic Classification of Elements
II.World of Living

Chapter 8. How do organisms Reproduce?

Chapter 9. Heredity and Evolution
III.Natural Phenomenon

Chapter 10. Light- Reflection and Refraction

Chapter 11. Human Eye and Colourful world
V.Natural Resources

Chapter 15. Our Environment

Chapter 16. Management of Natural Resourrces