by Tiwari Academy Team
NCERT Solutions for Class 7 Science are available here, free and chapter-wise, for the CBSE 2026-27 academic session. The new NCERT textbook, “Curiosity”, has 12 chapters and replaces the earlier 13-chapter Science book – solutions for both are covered on this page, since some schools are still using the older syllabus. Every solution is written in simple, exam-ready language and is free to read online or download as a PDF, in both Hindi and English Medium, with no login required.
Class 7 Science Quick Links:
Chapter-by-Chapter Overview (New Syllabus)
Class 7 Science Curiosity – Chapter-wise Solutions (New Syllabus 2026-27)
Chapter 1: The Ever-Evolving World of Science
Subject area: Introductory / General Science
An introduction to how scientific knowledge grows and changes over time and how curiosity and evidence drive new discoveries.
Chapter 2: Exploring Substances: Acidic, Basic and Neutral
Subject area: Chemistry
Explains how to identify acidic, basic and neutral substances using natural and chemical indicators and where they show up in daily life.
Chapter 3: Electricity: Circuits and their Components
Subject area: Physics
Covers how electric circuits work, their basic components and how current flows through simple series and parallel circuits.
Chapter 4: The World of Metals and Non-metals
Subject area: Chemistry
Compares the physical and chemical properties of metals and non-metals and explains how these properties decide their everyday uses.
Chapter 5: Changes Around Us: Physical and Chemical
Subject area: Chemistry
Distinguishes between physical and chemical changes through everyday examples and explains how to tell a reversible change from an irreversible one.
Chapter 6: Adolescence: A Stage of Growth and Change
Subject area: Biology
Explains the physical, hormonal and emotional changes that happen during adolescence and why this stage of growth matters.
Chapter 7: Heat Transfer in Nature
Subject area: Physics
Explores how heat moves by conduction, convection, radiation and how this shows up in weather and everyday life.
Chapter 8: Measurement of Time and Motion
Subject area: Physics
Covers how to measure time accurately and describe different types of motion, including speed and uniform vs non-uniform motion.
Chapter 9: Life Processes in Animals
Subject area: Biology
Looks at essential life processes in animals, including nutrition, respiration and the transportation of materials through the body.
Chapter 10: Life Processes in Plants
Subject area: Biology
Covers how plants carry out essential life processes such as nutrition, transportation and reproduction.
Chapter 11: Light: Shadows and Reflections
Subject area: Physics
Explains how light travels, forms shadows and reflects off surfaces, using everyday examples like mirrors and eclipses.
Chapter 12: Earth, Moon and the Sun
Subject area: Physics / Earth Science
Explores the relationship between the Earth, Moon, Sun and the natural phenomena – like day, night, seasons and eclipses – that this relationship creates.
Why Are There Two Chapter Lists?
From the 2026-27 session, NCERT replaced the earlier 13-chapter Class 7 Science book with a new 12-chapter textbook called “Curiosity”, moving toward more activity-based, inquiry-driven learning. Most CBSE schools have adopted Curiosity for 2026-27, but a few may still be using the older book for one more year – so solutions for both are kept here.
Class 7 Science Solutions (Old Syllabus, 13 Chapters)
- Chapter 1. Nutrition in Plants
- Chapter 2. Nutrition in Animals
- Chapter 3. Heat
- Chapter 4. Acids, Bases and Salts
- Chapter 5. Physical and Chemical Changes
- Chapter 6. Respiration in Organisms
- Chapter 7. Transportation in Animals and Plants
- Chapter 8. Reproduction in Plants
- Chapter 9. Motion and Time
- Chapter 10. Electric Current and its Effects
- Chapter 11. Light
- Chapter 12. Forests: Our Lifeline
- Chapter 13. Wastewater Story
Weekly Study Plan (new syllabus, covering all 12 chapters across 2 weeks)
Weekly Study Plan for Class 7 Science (Curiosity)
A study timetable helps you allocate time for each chapter, stay consistent and revise thoroughly before exams.
Week 1
| Day | Time | Chapter | Activity |
|---|---|---|
| Monday | 4:00โ5:00 PM | 1. The Ever-Evolving World of Science | Read textbook and make notes |
| Tuesday | 4:00โ5:00 PM | 2. Exploring Substances (Acidic, Basic, Neutral) | Solve textbook questions |
| Wednesday | 4:00โ5:00 PM | 3. Electricity: Circuits and their Components | Watch related videos |
| Thursday | 4:00โ5:00 PM | 4. The World of Metals and Non-metals | Conduct simple experiments |
| Friday | 4:00โ5:00 PM | 5. Changes Around Us: Physical and Chemical | Prepare revision notes |
| Saturday | 10:00โ11:00 AM | 6. Adolescence: A Stage of Growth and Change | Attempt practice questions |
| Sunday | 10:00โ11:00 AM | 7. Heat Transfer in Nature | Revise and test yourself |
Week 2
| Day | Time | Chapter | Activity |
|---|---|---|
| Monday | 4:00โ5:00 PM | 8. Measurement of Time and Motion | Read textbook and make notes |
| Tuesday | 4:00โ5:00 PM | 9. Life Processes in Animals | Solve textbook questions |
| Wednesday | 4:00โ5:00 PM | 10. Life Processes in Plants | Watch related videos |
| Thursday | 4:00โ5:00 PM | 11. Light: Shadows and Reflections | Conduct simple experiments |
| Friday | 4:00โ5:00 PM | 12. Earth, Moon and the Sun | Prepare revision notes |
| Saturday | 10:00โ11:00 AM | Full syllabus | Attempt a practice paper |
| Sunday | 10:00โ11:00 AM | Full syllabus | Revise weak topics and self-test |
Tips to Score Well in Class 7 Science
- Follow the 2026-27 Curiosity syllabus exactly – some chapters and topics from the earlier book have been removed, so studying only what’s current saves time.
- Stick to a fixed study slot each day (see the timetable above) rather than cramming – consistency matters more than long single sessions.
- Do the in-text activities and simple experiments in each chapter, not just the end-of-chapter questions – Curiosity is designed to be activity-based and teachers often draw test questions from these activities.
- Practise explaining a topic out loud to a friend or family member – teaching a concept back is one of the fastest ways to find out what you don’t yet understand.
- In the final two weeks before an exam, switch from reading to testing – use the practice questions and sample papers below.
CBSE Sample Papers for Class 7 โ full-length practice papers.
Why Use Tiwari Academy for Class 7 Science?
- Matches the exact 2026-27 Curiosity textbook – chapter names and order are aligned with the current NCERT book, not the outdated one.
- Step-by-step answers โ every textbook question is solved in simple, exam-ready language.
- Bilingual support – solutions available in both English and Hindi Medium.
- No login, no paywall – every solution is free to read online or download as a PDF.
- Reviewed by a subject expert – Science content is authored and reviewed by Shikhar Tiwari (B.Tech, Electronics and Communication Engineering, AKTU Noida).
- Offline access – a dedicated Android and iOS app lets students study Class 7 Science without an internet connection.
Continue Science Learning
Frequently Asked Questions
How many chapters are in Class 7 Science for 2026-27?
The new NCERT Curiosity textbook for Class 7 Science has 12 chapters for the 2026-27 session – down from 13 chapters in the earlier book. Both are covered chapter-wise on this page.
Why was the Class 7 Science textbook renamed to “Curiosity”?
NCERT redesigned the book as part of the NCF-SE 2023 curriculum reform, shifting from a memorisation-heavy structure to an activity-based, inquiry-driven approach – reflected in the new name, which encourages students to explore and question rather than just read.
What is special about the Class 7 Science Curiosity textbook?
It focuses on activity-based, concept-driven learning rather than memorising facts. Each chapter uses real-life examples, diagrams and hands-on activities to help students understand how and why things work, not just what the answer is.
Is the Class 7 Science Curiosity textbook hard to understand for students?
No. Concepts are broken into manageable sections with clear diagrams, examples and activities. Chapters that sound complex, like heat transfer or life processes, are explained through everyday situations rather than technical definitions.
How should students study the Class 7 Science Curiosity textbook to score well?
Read each chapter actively, complete the activities and experiments (not just the end-of-chapter questions), make short revision notes or concept maps and test yourself regularly using practice questions rather than only re-reading the textbook.
Is Class 7 Science available in Hindi Medium and is it free?
Yes. Every chapter-wise solution is free to read online or download as a PDF, in both English and Hindi Medium, with no login or payment required.
Are solutions available for the Class 7 Science old syllabus too?
Yes. Since some schools haven’t switched to the Curiosity textbook yet, this page keeps chapter-wise solutions for the earlier 13-chapter book (Nutrition in Plants through Wastewater Story) as well.
What study resources are available for Class 7 Science besides chapter solutions?
Along with chapter-wise NCERT solutions, Tiwari Academy provides revision notes, worksheets, an important-questions bank and sample papers – all aligned with the CBSE 2026-27 syllabus and free to download as PDF.
Are the Class 7 Science solutions available in PDF format for offline use?
Yes. All solutions can be downloaded as a free PDF and the Class 7 Science Android and iOS apps also allow complete offline access to chapter-wise solutions.
