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Subjects

Class 10 Science

Science helps students understand the natural world through core ideas in physics, chemistry, biology, and environmental studies. Students explore matter, motion, energy, forces, living systems, health, natural resources, and everyday scientific applications while developing observation, reasoning, and problem-solving skills. The subject pages organise learning into chapters and topics, making it easier to study concepts in sequence or revise specific areas. Topic-wise and chapter-wise MCQs provide focused practice, while answers and clear explanations help students check their understanding, identify mistakes, and strengthen concepts before assessments.

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Chemical Substances – Nature and Behaviour

In Class 10 Science, the chapter Chemical Substances – Nature and Behaviour introduces how substances are identified, transformed, and classified through their properties and reactions. Students explore chemical reactions and equations, acids, bases and salts, metals and non-metals, and carbon compounds. The chapter develops an understanding of observable changes, chemical behaviour, and the relationship between composition, properties, and everyday materials.

2,963questions
2

World of Living

The Class 10 Science chapter World of Living explores the essential features and continuity of life. It introduces life processes that sustain organisms, the control and coordination of body functions and responses, reproduction as a means of producing new individuals, and heredity and evolution as explanations for the transmission and gradual change of traits. The chapter connects these ideas to help students understand living organisms as organised, responsive, and evolving systems.

1,969questions
3

Metals and Non-metals

In Class 10 Science, the chapter Metals and Non-metals examines the physical and chemical properties that distinguish these materials. Students compare their reactions with oxygen, water and acids, and use the reactivity series to understand displacement reactions. The chapter also introduces ionic compounds, explains why metals and non-metals form ions, and covers basic ideas of corrosion, its prevention, and metal extraction.

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4

Carbon and its Compounds

In Class 10 Science, the chapter Carbon and its Compounds explains why carbon forms a wide variety of stable substances through covalent bonding. Students study hydrocarbons, saturated and unsaturated carbon compounds, and functional groups that influence chemical properties. The chapter also introduces important reactions of carbon compounds and compares soaps and detergents, including how they work in cleaning and the limitations of soap in hard water.

51questions
5

Life Processes

In Class 10 Science, the chapter Life Processes explains the essential functions that keep organisms alive. It covers nutrition and how living beings obtain and use food, respiration for releasing energy, transportation of materials within plants and animals, and excretion for removing wastes. The chapter helps students compare these processes across different organisms and understand how body systems work together to maintain life.

91questions
6

Control and Coordination

Class 10 Science Chapter “Control and Coordination” explains how living organisms regulate and coordinate body functions. It introduces the nervous system, neurons, reflex actions and reflex arcs, showing how quick responses are produced. The chapter also covers the endocrine system and hormones in animals, along with plant hormones and their role in growth, movement and responses to environmental changes.

198questions
7

How do Organisms Reproduce

In Class 10 Science, the chapter How do Organisms Reproduce explains why reproduction is essential for the continuity of species and compares asexual and sexual methods. Students examine reproduction in plants and animals, including cell division, fertilization, and early development. The chapter also introduces human reproductive systems and reproductive health, helping learners understand variation, responsible choices, and the biological processes that produce new organisms.

16questions
8

Heredity and Evolution

Class 10 Science Chapter Heredity and Evolution explains how traits are passed from parents to offspring through inheritance. It introduces Mendel’s laws and the role of genes in determining characteristics, including sex determination in humans. The chapter also explores evolution as the gradual change in populations over generations and describes how variation and isolation can lead to the formation of new species.

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9

Light Reflection and Refraction

Class 10 Science Chapter “Light Reflection and Refraction” introduces how light behaves when it reflects from surfaces and bends while passing between different media. Students study the laws of reflection, image formation by spherical mirrors, refraction of light, and the use of lenses to form images. The chapter builds understanding of ray diagrams, mirror and lens behaviour, and common optical phenomena seen in everyday life.

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The Human Eye and the Colourful World

In Class 10 Science, the chapter “The Human Eye and the Colourful World” explains how the human eye forms images and how common vision defects are corrected. It also explores dispersion, atmospheric refraction, and scattering of light to explain familiar natural phenomena, including the appearance of colours in the sky and changes in the apparent position or brightness of celestial objects.

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11

Electricity

Class 10 Science Chapter Electricity introduces electric current, potential difference, and the relationship between them through Ohm’s law. Students learn how resistance affects current in conductors, how electrical energy produces heat, and how these ideas are applied in simple circuits. The chapter also explains the basic arrangement and safe use of domestic electric circuits, helping students connect scientific concepts with everyday electrical appliances.

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12

Magnetic Effects of Electric Current

Class 10 Science chapter “Magnetic Effects of Electric Current” explains how electric current produces a magnetic field and how magnetic field lines represent its direction and strength. Students learn the working principles of electromagnets, electric motors, and electric generators, including the relationship between electricity and magnetism. The chapter also develops an understanding of how these ideas are applied in common electrical devices.

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13

Our Environment

In Class 10 Science, the chapter Our Environment introduces ecosystems and the relationships between living organisms and their surroundings. Students explore food chains, food webs, and the movement of energy through different trophic levels. The chapter also explains the importance of the ozone layer, the effects of non-biodegradable waste, and practical approaches to waste management for protecting environmental balance.

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14

Sustainable Management of Natural Resources

In this Class 10 Science chapter, students explore how forests, wildlife, water, coal and petroleum can be used responsibly while meeting human needs. They examine the role of local communities and other stakeholders in conservation, learn why biodiversity and equitable resource sharing matter, and study practical approaches such as rainwater harvesting and the 3R principle—reduce, reuse and recycle. The chapter connects scientific understanding with everyday choices and long-term environmental sustainability.

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15

Acids, Bases and Salts

In this Class 10 Science chapter, students explore the properties and everyday uses of acids, bases and salts. They learn how indicators help identify acidic and basic substances, understand the pH scale, and study reactions such as neutralisation, acid–metal reactions and acid–carbonate reactions. The chapter also explains how common salts are formed and used, including baking soda, washing soda and bleaching powder, while connecting these ideas to household, industrial and environmental contexts.

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16

Sources of Energy

In Class 10 Science, the chapter Sources of Energy examines how energy is obtained for daily life and development. It compares conventional and alternative sources, including fossil fuels, solar energy, wind energy, hydropower, biomass, tidal energy, wave energy, geothermal energy, and nuclear energy. Students learn to assess sources by availability, efficiency, cost, environmental impact, and whether they are renewable or non-renewable.

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17

Periodic Classification of Elements

In Class 10 Science, the chapter Periodic Classification of Elements explains how elements are arranged systematically according to their properties and atomic structure. Students learn the Modern Periodic Law and the layout of the Modern Periodic Table, including periods and groups. The chapter also examines trends in properties such as valency, atomic size, and metallic or non-metallic character, helping students compare elements and predict their behaviour.

7questions
18

Chemical Reactions and Equations

In this Class 10 Science chapter, students learn how to identify chemical reactions through changes such as colour, temperature, state, or gas formation. They practise writing word equations and balanced chemical equations using the law of conservation of mass. The chapter explains major types of reactions, including combination, decomposition, displacement, and double displacement, along with oxidation and reduction. It also connects these ideas to everyday processes such as corrosion and rancidity.

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