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NCERT Solutions for Class 10 Science have been provided in the article. Solutions of class 10 Science also cover important formula, derivations, laws, theorems, etc. The book is subdivided into five units: Chemical Substances-Nature and Behaviour, World of Living, Natural Phenomena, Effects of Current, and Natural Resources.
Also check: CBSE Class 10 Science Syllabus (Updated)
NCERT Solutions for Class 10 Science: Chapter-wise Solutions
NCERT Solutions for Class 10 Science are as follows:
NCERT Solutions for Class 10 Science: Chapter-wise Notes
NCERT Solutions for Class 10 Science Chapter-wise Notes have been provided below:
Chemical Reactions
The transformation of chemical substance into a new chemical substance by making and breaking of bonds between different atoms is known as Chemical Reaction.
- Weightage in Board Examination: This chapter belongs to the Unit I: Chemical Substances - Nature and Behaviour. This unit alone holds a total weightage of 25 Marks.
- Important Topics:
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Acids, Bases and Salts
An acid is defined as a substance whose water solution tastes sour, turns blue litmus red and neutralizes bases. A substance is called base if its aqueous solution tastes bitter, turns red litmus blue or neutralizes acids. Salt is a neutral substance whose aqueous solution does not affect litmus.
- Weightage: This chapter belongs to the Unit I: Chemical Substances - Nature and Behaviour. This unit alone holds a total weightage of 25 Marks.
- Important Topics:
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Metals and Non-metals
Metals are elements that are hard due to the presence of a strong metallic connection between the atoms. Non-metals are soft components.
- Weightage: This chapter belongs to the Unit I: Chemical Substances - Nature and Behaviour. This unit alone holds a total weightage of 25 Marks.
- Important Topics:
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Carbon and its Compounds
Carbon compounds are compounds whose molecules contain a carbon atom. They are chemical substances where a carbon atom has bonded to an atom of another element.
- Weightage: This chapter belongs to the Unit I: Chemical Substances - Nature and Behaviour. This unit alone holds a total weightage of 25 Marks.
- Important Topics:
- Covalent bonding in carbon compounds
- Difference between saturated hydrocarbons and unsaturated hydrocarbons
- Chemical properties of carbon compounds
- Uses of Methanol and Ethanol
- Soaps and Detergents
- Isomerism
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Periodic Classification of Elements
Periodic classification of elements is the method by which elements are grouped on the basis of their characteristics i.e. we keep the elements that are alike in one group and the rest of the elements in the other group.
- Important Topics:
- Dobereiner’s Triads
- Newland’s Law of Octaves
- Mendeleev’s Periodic Table
- Modern periodic table
Also check:
Chapter Related Links | ||
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Periodic Classification of Elements Important Question | Periodic Classification of Elements Revision Notes | Electromeric Effect |
Newlands’ Law of Octaves | Atomic number | Valency |
Please note: As per updated Class 10 Science Syllabus 2022-23, Chapter 5: Periodic Classification of Elements has been deleted.
Life Processes
Life processes are the common essential processes or things that a living thing has to perform for them to live or survive.
- Weightage: This chapter belongs to the Unit II: World of Living. This unit holds a total weightage of 25 Marks.
- Important Topics:
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Control and Coordination
Control is defined as the power of restraining and regulating by which a process can be started, regulated in pace to speed up or slow down or stop completely. Coordination can be defined as the working together of the different systems of an organism in order to produce an appropriate reaction to stimuli.
- Weightage: This chapter belongs to the Unit II: World of Living. This unit holds a total weightage of 25 Marks.
- Important Topics:
- Tropic movements in plants
- Introduction of plant hormones
- Control and co-ordination in animals
- Nervous system
- Chemical co-ordination: Animal Hormones
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Chapter Related Links | ||
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Diagram of Neuron | Nerves | Diagram of Brain |
Control and Coordination | Cell Signalling | Animals Nervous System |
Reproduction
Reproduction is the process by which living organisms produce new individuals similar to themselves.
- Weightage: This chapter belongs to the Unit II: World of Living. This unit holds a total weightage of 25 Marks.
- Important Topics:
- Reproduction in animals and plants (asexual and sexual)
- Safe sex vs HIV/AIDS
- How do Organisms Reproduce?
- Female Reproductive System
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Heredity and Evolution
Heredity describes the biological processes by which certain characteristics are transmitted from parents to their offspring. Evolution is the change in the heritable characteristics of biological populations over many generations.
- Weightage: This chapter belongs to the Unit II: World of Living. This unit holds a total weightage of 25 Marks.
- Important Topics:
- Excluded Topics (As per updated Class 10 Science Syllabus 2022-23):
- Evolution
- Evolution and classification
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Light reflection occurs when a ray of light bounces off a surface and changes direction.
- Weightage: This chapter belongs to the Unit III: Natural Phenomena. This unit holds a total weightage of 12 Marks.
- Important Topics:
- Reflection of light by curved surfaces
- Images formed by spherical mirrors
- Refraction
- Refractive index
- Refraction of light by spherical lens
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The Human Eye and the Colourful World
The human eye is the most significant one as it enables us to see the beautiful, colourful world around us.
- Weightage: This chapter belongs to the Unit III: Natural Phenomena. This unit holds a total weightage of 12 Marks.
- Important Topics:
- Functioning of a lens in human eye
- Defects of vision and their corrections
- Applications of spherical mirrors and lenses
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Electricity
Electricity is defined as the rate of flow of charges in a conductor.
- Weightage: This chapter belongs to the Unit IV: Effects of Current. This unit holds a total weightage of 13 Marks.
- Important Topics:
Also check:
Chapter Related Links | ||
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Heating Effect of Electric Current | Difference between fuse and circuit breaker | Working of electric bell |
Magnetic Effects of Electric Current
Electric current has two effects; heating effect and magnetic effect.
- Weightage: This chapter belongs to the Unit IV: Effects of Current. This unit holds a total weightage of 13 Marks.
- Important Topics:
Also check:
Chapter Related Links | ||
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Magnetic Effects of Electric Current | Electric Motor | Magnetic Effects of Electric Current Revision Notes |
Commutator | Types of Motors | Difference between AC and DC generator |
Sources of Energy
The sources of energy can be classified as Renewable and Non-Renewable sources of energy.
- Important Topics:
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Please note: As per updated Class 10 Science Syllabus 2022-23, Chapter 14: Sources of Energy has been deleted.
Our Environment
Our Environment comprises of three components – natural components (air, water, land & living things), human components (individual, family, community), and human-made components (roads, monuments, industries), and is a combination of natural and human-made phenomena.
- Weightage: This chapter belongs to the Unit IV: Natural Resources. This unit holds a total weightage of 05 Marks.
- Important Topics:
- Eco-system
- Environmental problems
- Ozone depletion
- Biodegradable and non-biodegradable substances
Also check:
Chapter Related Links | ||
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Food Chains and Webs | Food Web | Difference between food chain and food web |
Sustainable Management of Natural Resources
Sustainable management examples include the quality of air and drinking water, and pro- tection from natural hazards such as floods and avalanches. resource use will continue to be of value to the society over the long term.
Also check:
Chapter Related Topics | |
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Sustainability of natural resources | Class 10 chapter 16 management of natural resources MCQ |
Please note: As per updated Class 10 Science Syllabus 2022-23, Chapter 16: Sources of Energy will not be assessed in the year-end examination. This may be for Internal Assessment and credit may be given Periodic Assessment/Portfolio).
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