NCERT Solutions for Class 7 Science Updated (2025-26) Free PDF Download

Understanding science becomes truly exciting when concepts are explained in a simple and engaging way. The NCERT Class 7 Science textbook and the NCERT Curiosity Book for Class 7 Science are perfect companions for students preparing for CBSE Class 7 Science exams. These books break down complex topics into easy-to-understand explanations, sparking curiosity and making learning a fun journey rather than a burden. With clear illustrations, real-life examples, and descriptive content, they help students grasp scientific ideas with confidence. Whether you're revising chapters or exploring new topics, these resources are designed to build a strong foundation in science while encouraging a natural love for learning.

Here you will get NCERT Solutions for Class 7 Science. For students who want to do well in their Science exams, practicing NCERT Solutions is a must. Students who have issues solving problems from the NCERT textbook for Class 7 can use our free NCERT Solutions.

Students should practice Class 7th NCERT Solutions, which are available in PDF format, because it will help them learn the fundamental ideas more readily. Infinity learn has designed step-by-step solutions with full explanations for students anxious about finding the most comprehensive and detailed NCERT Solutions for Class 7. 

NCERT Solutions for Class 7 Science 2025-26

NCERT Solutions for Class 7 Science 2024-25 offer a structured and engaging way to understand core concepts across Physics, Chemistry, and Biology. Designed for both Hindi and English medium students, these updated solutions help curious minds explore topics like light, motion, and ecosystems with clarity. Whether you're tackling Class 7 Science Chapter 11 on the environment or solving questions from Chapter 13 on light, these NCERT Curiosity Workbook and Exercise Solutions support deep learning in the 2025-26 session.

The NCERT Class 7 Science textbook, along with the Curiosity Book: Textbook of Science for Grade 7, makes learning both fun and meaningful for students preparing for the CBSE Class 7 Science exams. Designed in line with the National Education Policy (NEP) 2020 and the National Curriculum Framework for School Education (NCF-SE) 2023, the Curiosity Book goes beyond the usual textbook. It focuses on hands-on learning, real-life examples, and simple explanations that spark curiosity and build a deeper understanding. With exciting activities, experiments, and thoughtful questions, it encourages students to think critically, explore the world around them, and enjoy the process of discovery. These resources together help build a strong foundation in science while making each lesson something to look forward to.

The revised NCERT syllabus for Class 7 now focuses on 16 core chapters that cover fundamental scientific concepts. These chapters form the basis for assessment and examinations in the 2025-26 academic year.

Also Check:

NCERT Solutions for Class 7 Science 2025–26 Chapter-wise PDF with Direct Links

Studying NCERT Class 7 Science becomes much easier when you have the right resources by your side. The NCERT Solutions for Class 7 Science PDF is a great tool for students who want clear, step-by-step answers to every question from the official NCERT textbook. Aligned with the latest CBSE Class 7 syllabus, these solutions are designed to simplify complex topics and make learning more effective. 

Whether you're working through your 7th Class Science chapters or preparing for school exams, having access to reliable, easy-to-understand explanations can make a big difference. These solutions follow the exact pattern of CBSE Class 7 Science, helping you stay on track with your studies and revise at your own pace.

Here is the complete and updated overview of all the chapters covered in NCERT Solutions for Class 7 Science as per the 2025–26 academic session.

Also Check: Worksheet for Class 7 Science 

Chapter-wise NCERT Solutions for Class 7 Science with Topics Covered

These NCERT Solutions for Class 7 Science serve as a valuable study resource for students. In this guide, we’ve provided a clear summary of each chapter along with the important topics covered. It gives you a quick understanding of what you will learn in every chapter, helping you prepare better and stay ahead in your studies.

Chapter 1: Nutrition in Plants

Plants need food to live and grow, just like us. But they are like little chefs and make their own food. This food-making process is called photosynthesis. Plants also take up important nutrients from the soil, such as nitrogen, phosphorus, and potassium. These nutrients help them build proteins, grow strong roots, and stay healthy overall. However, some plants, like mushrooms, can't make their own food. They get their nutrition from other sources. To help crops grow well, farmers often add fertilizers to the soil to give back the nutrients that plants have used up.

Important Topics Discussed in Chapter 1

• Photosynthesis: Process where plants make food using sunlight, carbon dioxide, and water.
• Chlorophyll is the green stuff in leaves that grabs sunlight, which plants then use to make their own food.
• Stomata: Tiny pores on leaves for gas exchange.
• Transport of Water and Minerals: Roots absorb water and minerals, which are carried to leaves.
• Other Modes of Nutrition: Some plants get food from other sources, like fungi or dead matter.
• Soil Nutrient Replenishment: How nutrients used by plants are replaced in soil.

Chapter 2: Nutrition in Animals

Animals are somewhat different from Plants. To get energy, grow, and repair their bodies, they need to eat plants or other animals. The whole process of how animals take in food, break it down into simpler forms, and then use it is called animal nutrition. Animals that eat grass, like cows, have a unique stomach designed to digest tough plant material. Even tiny living things like an Amoeba have their own way of eating by surrounding their food.

Important Topics Discussed in Chapter 2

• Modes of Feeding: Different animals eat in different ways.
• Human Digestive System: Parts like mouth, stomach, intestines, and associated glands.
• Digestion Process: is basically your body taking the food you eat and breaking it down into tiny bits it can actually use
• Digestion in Grass-eating Animals: Special stomachs for digesting grass.
• Feeding in Amoeba: How single-celled organisms eat and digest food.

Also Check: Foundation Course for Class 7

Chapter 3: Heat

We can measure how hot or cold something is using a thermometer. Think about why you wear different clothes in different seasons. In the summer, light-colored and thin clothes help us stay cool. In winter, we wear thick, often dark-colored clothes to keep our bodies warm. Heat has a natural tendency to move from a hotter object or place to a cooler one. This movement of heat is called heat transfer.

Important Topics Discussed in Chapter 3

• Heat and Temperature: Difference between the two.
• Measuring Temperature: Use of thermometers.
• Heat Transfer: Conduction, convection, and radiation.
• Clothing and Seasons: Why we wear different clothes in summer and winter.

Chapter 4: Acids, Bases, and Salts

Some substances are called acids, and they usually taste sour. A common test for acids is that they turn blue litmus paper red. Then there are bases, which often taste bitter and feel a bit soapy. When acids and bases mix together in the right amounts, they form substances called salts. To tell if something is an acid or a base, we use special substances called indicators, like litmus paper or even turmeric from your kitchen

Important Topics Discussed in Chapter 4

• Acids and Bases: Properties and examples.
• Indicators: Substances that show if a solution is acidic or basic.
• Neutralization: Reaction between acid and base to form salt and water.
• pH Scale: Measuring acidity or basicity.
• Uses in Daily Life: Examples of acids, bases, and salts at home.

Chapter 5: Physical and Chemical Changes

Changes happen all the time, and we can group them into two types. A physical change is one where the substance might look different, but it doesn't become a new substance. For example, when ice melts into water, it's still water – that’s a physical change. On the other hand, a chemical change results in a completely new substance being formed. 

Important Topics Discussed in Chapter 5

• Physical Changes: No new substance formed, reversible.
• Chemical Changes: New substance formed, irreversible.
• Examples: Melting ice (physical), rusting iron (chemical).
• Rusting and Crystallization: Specific examples of chemical changes.

Chapter 6: Respiration in Organisms

All living organisms, from the smallest bug to the largest whale, need to respire to live. We need oxygen to unlock the energy stored in the food we eat. Humans and many other animals use lungs to breathe air. Fish have a different system; they use gills to take in oxygen from the water. Plants also "breathe"! They take in and release gases through tiny pores, mostly found on their leaves, called stomata.

Important Topics Discussed in Chapter 6

• Respiration: Process of taking in oxygen, releasing carbon dioxide.
• Breathing: How humans and animals breathe.
• Respiration in Plants: How plants respire.
• Underwater Respiration: How fish breathe using gills.

Chapter 7: Transportation in Plants & Animals

Living organisms need a proper system to move essential substances like water, nutrients, and gases within their bodies. In this chapter, we'll dive into how both animals and plants move essential substances around their bodies. Animals, like us humans, rely on a circulatory system to ferry blood, oxygen, and even waste. Plants, however, use unique internal "pipes" or special tissues to carry water and food to all their different parts. This whole process of transportation is super important, ensuring every living thing can survive, grow, and work properly.

Important Topics Discussed in Chapter 7

• Circulatory System: Blood transport in animals.
• Excretion: Removal of waste from the body.
• Transport in Plants: Water and food movement through xylem and phloem.

Chapter 8: Reproduction in Plants

Plants have ways to create new plants, which is called reproduction. They can do this in two main ways: asexually or sexually. Asexual reproduction means a new plant can grow from a part of a single parent plant. This can happen through methods like budding (a small bud grows and separates), fragmentation (a piece breaks off and grows), or through spores (tiny reproductive cells). Sexual reproduction in plants usually involves flowers. Flowers have male and female parts.

Important Topics Discussed in Chapter 8

• Asexual Reproduction: Budding, fragmentation, spore formation.
• Sexual Reproduction: Pollination and fertilization.
• Seed Formation: How seeds are produced.

Chapter 9: Motion and Time

Motion simply means that an object is changing its position as time passes. Things can move in different ways: in a straight line (like a car on a straight road), in a circle (like a merry-go-round), or along a curved path. Speed tells us how fast something is moving – it’s the distance covered in a certain amount of time.

Important Topics Discussed in Chapter 9

• Motion: Change in position over time.
• Speed: How fast something moves.
• Measurement of Time: Clocks and stopwatches.
• Distance-Time Graph: Representing motion visually.

Chapter 10: Electric Current & its Effects

This flow of electricity can cause different things to happen – these are its effects. There are three main effects: the heating effect (like in an electric heater or iron, where electricity makes things hot), the magnetic effect (electricity flowing can create a magnet, which is used in things like electromagnets), and the chemical effect (electricity can cause chemical reactions). In diagrams, we use special symbols to represent different parts of an electrical circuit, like batteries, bulbs, and switches.

Important Topics Discussed in Chapter 10

• Electric Components: Symbols and their uses.
• Heating Effect: How current produces heat.
• Magnetic Effect: Current creating magnetism.
• Electromagnet and Electric Bell: Applications of magnetic effect.

Chapter 11: Light

Mirrors reflect light in such a way that they can form images. Lenses, like those in eyeglasses or magnifying glasses, are different; they bend light as it passes through them. Lenses can also form images, and they are used in many optical instruments.

Important Topics Discussed in Chapter 11

• Light Travel: Moves in straight lines.
• Reflection: Bouncing back of light.
• Mirrors and Lenses: Types and images formed.

Chapter 12: Forests – Our Lifeline

They help influence rainfall patterns, prevent soil from washing away (soil erosion), and generally keep our environment clean and stable. It's crucial that we protect our forests to maintain the delicate balance of nature.

Important Topics Discussed in Chapter 12

• Forest Ecosystem: Plants, animals, and microorganisms.
• Interactions: How forest components depend on each other.
• Importance of Forests: Air, water, soil, and climate regulation.
• Conservation: Need to protect and plant trees.

Chapter 13: Wastewater Story

Wastewater is any water that has been used and made dirty by homes (from toilets, showers, kitchens), factories, and farms. This dirty water can't just be released back into the environment because it contains pollutants and germs. It needs to be cleaned first. Wastewater treatment plants are facilities designed to clean this water through various stages, removing harmful substances and making it safe enough to be reused or returned to nature. We should all try to use water wisely and avoid polluting it to help reduce the burden on our environment.

Important Topics Discussed in Chapter 13

• Sewage: Wastewater from homes and industries.
• Treatment Plants: Cleaning wastewater before reuse.
• Sanitation and Disease: Importance of clean water and hygiene.
• Alternative Arrangements: Safe sewage disposal in public places.

 Key Benefits of Using NCERT Solutions for Class 7 Science

Using NCERT Solutions for Class 7 Science is one of the smartest ways to strengthen your understanding of key scientific concepts. Here are some benefits of using Infinity Learns NCERT Solutions for Class 7 Science

• Expert tutors have carefully designed the NCERT Class 7 Science Solutions to make learning easier and more effective for students.
• These solutions follow a step-by-step approach, helping students understand even complex topics with confidence.
• Each chapter and exercise is fully covered as per the latest NCERT Class 7 syllabus, ensuring no topic is left out.
• Important science formulas are smoothly included within the steps, making them easier to remember and apply.
• Students can easily download these solutions in PDF format for free and study anytime, even without internet access.
• These resources actively help students clear their doubts and develop a strong conceptual understanding of each topic.
• Ideal for daily revision, school homework, and CBSE Class 7 Science exam preparation, these solutions promote smart and independent learning.

NCERT Solutions for Class 7 Science - Solved MCQs

1. When a charge flows through a conductor, it produces:
   a) Heat only
   b) Magnetic field only
   c) Light and sound
   d) Both heat and magnetic field
   Answer: d) Both heat and magnetic field
2. The time taken by a pendulum to complete one full swing is called:
   a) Amplitude
   b) Frequency
   c) Period
   d) Motion
   Answer: c) Period
3. A sound wave can travel through:
   a) Vacuum only
   b) Solids only
   c) Liquids and gases only
   d) Solids, liquids, and gases
   Answer: d) Solids, liquids, and gases
4. Why are LED bulbs more energy efficient than filament bulbs?
   a) They use less mercury
   b) They produce more heat
   c) They convert most energy into light
   d) They glow in all directions
   Answer: c) They convert most energy into light
5. What is the standard unit used to measure the flow of electric current?
   a) Volt
   b) Ohm
   c) Watt
   d) Ampere
   Answer: d) Ampere
6. Which process converts water vapour directly into ice?
   a) Condensation
   b) Freezing
   c) Sublimation
   d) Deposition
   Answer: d) Deposition
7. The rusting of iron is a type of:
   a) Physical change
   b) Periodic change
   c) Chemical change
   d) Reversible change
   Answer: c) Chemical change
8. Why is plastic not considered eco-friendly?
   a) It decomposes fast
   b) It corrodes easily
   c) It reacts with water
   d) It is non-biodegradable
   Answer: d) It is non-biodegradable
9. Why are acids stored in glass bottles?
   a) Glass is strong
   b) Glass is shiny
   c) Glass is non-reactive
   d) Glass is transparent
   Answer: c) Glass is non-reactive
10. Which part of your digestive system is the main player when it comes to soaking up nutrients from the food you eat?
    a) Stomach
    b) Large intestine
    c) Small intestine
    d) Esophagus
    Answer: c) Small intestine
11. The process of seed dispersal helps in:
    a) Reducing seed life
    b) Better flowering
    c) Preventing overcrowding
    d) Fast ripening
    Answer: c) Preventing overcrowding
12. Respiration in plants occurs mainly through:
    a) Leaves
    b) Stem
    c) Flowers
    d) Stomata
    Answer: d) Stomata
13. Which component of blood helps in clotting?
    a) White blood cells
    b) Red blood cells
    c) Platelets
    d) Plasma
    Answer: c) Platelets
14. Asexual reproduction occurs through budding in:
    a) Earthworm
    b) Hydra
    c) Dog
    d) Amoeba
    Answer: b) Hydra
15. Which of the following is an adaptation in camels for desert life?
    a) Short legs
    b) Large ears
    c) Humps storing fat
    d) Thick fur
    Answer: c) Humps storing fat