NCERT Solutions for Class 7 Science - Download Chapter Wise Solution PDF

Edited By Irshad Anwar | Updated on Jun 11, 2025 11:24 AM IST

Have you ever been curious about how electricity supplies your home, why the sky is coloured, or how plants grow? These everyday events are studied in your books, and learning them can at times be difficult. The NCERT Solutions for Class 7 Science have been designed to make these ideas easy to grasp without any extra help. These answers are designed by subject experts in easy and well-understandable language, strictly based on the CBSE curriculum. All the concepts and chapters will allow students to build a strong foundation of science in higher classes and also in competitive exams.

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Why Choose Our NCERT Solutions?
Chapter-wise NCERT Solutions for Class 7 Science
NCERT Solutions for Class 7 Science Chapter-Wise
How to Download NCERT Solutions PDF from Careers360?

Careers360 offers such detailed explanations to help students in their learning process, and study exactly what they need for their school exams. These resources can help you improve your understanding of important scientific principles, increase your problem-solving ability, and make it easy for you to finish all questions and exercises in your NCERT textbook confidently and clearly. With detailed explanations and colourful pictures, learning Class 7 Science is a more enjoyable and satisfying experience.

Why Choose Our NCERT Solutions?

100% NCERT-Based: Follows the latest CBSE syllabus and guidelines to ensure full exam relevance.
Concept Clarity: Simplified explanations help you understand even the toughest topics easily.
Step-by-Step Answers: Each question is solved in a logical, structured manner to improve problem-solving skills.
Expert-Curated: Solutions are prepared by experienced educators with deep subject knowledge.
Time-Saving for Revisions: Ideal for quick revisions before tests and exams—no need to search multiple sources.
Exam-Ready Material: Helps you practice well, build confidence, and score better in your Science exams.

Chapter-wise NCERT Solutions for Class 7 Science

Students can click the link below to access and download the entire solutions for all the Science Class 7 chapters. Exploring complete answers is incredibly convenient due to this direct access, which improves understanding and exam preparation.

NCERT Solutions for Class 7 Science Chapter-Wise

The chapterwise solutions are given below for easy and quick access:

NCERT Solutions for Class 7 Science Chapter 1 The Ever-Evolving World of Science

NCERT Solutions for Class 7 Science Chapter 2 Exploring Substances: Acidic, Basic, and Neutral

NCERT Solutions for Class 7 Science Chapter 3 Electricity: Circuits and their Components

NCERT Solutions for Class 7 Science Chapter 4 The World of Metals and Non-metals

NCERT Solutions for Class 7 Science Chapter 5 Changes Around Us: Physical and Chemical

NCERT Solutions for Class 7 Science Chapter 6 Adolescence: A Stage of Growth and Change

NCERT Solutions for Class 7 Science Chapter 7 Heat Transfer in Nature

NCERT Solutions for Class 7 Science Chapter 8 Measurement of Time and Motion

NCERT Solutions for Class 7 Science Chapter 9 Life Processes in Animals

NCERT Solutions for Class 7 Science Chapter 10 Life Processes in Plants

NCERT Solutions for Class 7 Science Chapter 11 Light: Shadows and Reflections

NCERT Solutions for Class 7 Science Chapter 12 Earth, Moon, and the Sun

Class 7 Science NCERT Solutions: Chapter's Brief

Here is a breakdown of the chapters covered in Class 7 Science:

Chapter 1: The Ever-Evolving World of Science

Science makes us aware of how the world around us works, such as clocks, plants, and even our own body.
Things that happen have causes and effects; science tells us why things happen the way they do.
Nature's patterns, like seasons or what animals do, make us learn about change and inform us about what will happen in the future.
Some fruits are sour because they contain substances like citric acid.
Day-to-day responses, such as soap causing turmeric stains to become red, demonstrate how substances behave.

Chapter 2: Exploring Substances: Acidic, Basic, and Neutral

Substances can be acids (sour, e.g., lemon), bases (bitter and soapy, e.g., soap), or neutral (neither acidic nor basic).
Indicators such as litmus paper enable us to check whether a substance is acidic or basic.
Acids change blue litmus to red; bases change red litmus to blue.
Neutralisation is the reaction between an acid and a base to produce salt and water, frequently encountered in everyday life (such as treating ant bites with baking soda).
Certain plants and natural products are indicators (e.g., rose petals, turmeric).

Chapter 3: Electricity: Circuits and their Components

An electric circuit is a route for electric current to travel.
Principal parts: battery (or cell), wires, bulb, and switch (key).
A closed circuit (switch ON) enables current to pass through and the bulb to light.
An open circuit (switch OFF) prevents current and the bulb won't light.
Batteries are constructed by connecting two or more cells; symbols represent bits of a circuit.
Safety: Never hold a glowing bulb or mains electricity.

Chapter 4: The World of Metals and Non-metals

Metals are lustrous, hard, and poor conductors of heat and electricity (such as iron, copper).
Non-metals are typically dull, brittle, and weak conductors (such as sulfur, carbon).
Metals are utilized for the manufacture of wires, tools, and machinery.
Non-metals are utilized in medicines, fertilizers, and as fuel.
Both play vital roles in our life and industry

Chapter 5: Changes Around Us: Physical and Chemical

Changes can be physical (no new substance created, such as melting ice) or chemical (new substance created, such as rusting iron).
Physical changes tend to be reversible; chemical changes tend to be irreversible.
Examples: dissolving salt in water (physical), burning paper (chemical).
Knowing these helps us in cooking, cleaning, and various daily tasks.

Chapter 6: Adolescence: A Stage of Growth and Change

Adolescence is the stage of developing from a child to an adult.
Numerous bodily and emotional changes occur, such as weight spurts and mood swings, during this stage.
Hormones regulate these changes in boys and girls.
Proper diet and cleanliness are necessary at this stage.
Adolescence is an inevitable and significant phase of life.

Chapter 7: Heat Transfer in Nature

Heat transfers from warmer objects to cooler objects.
Three methods of heat transfer: conduction (by touch), convection (by movement in liquids/gases), and radiation (without touch).
Examples: cooking, sea wind, warmth from the sun.
Insulators (such as wool) trap heat; conductors (such as metal) allow heat to pass.

Chapter 8: Measurement of Time and Motion

Clocks and watches measure time; speed and distance measure motion.
Types of motion: straight, circular, and periodic (such as pendulum).
Measuring allows us to plan activities and know movement in nature.
Units such as seconds, minutes, meters, and kilometres are used.

Chapter 9: Life Processes in Animals

Animals require food, water, and air to survive.
Key life processes: nutrition, respiration, circulation, excretion, and reproduction.
Every part of the body has a specific function (e.g., heart pumps blood, lungs assist in breathing).
Animals also adapt to their surroundings to survive.

Chapter 10: Life Processes in Plants

Plants synthesize their own food using sunlight (photosynthesis).
They absorb water and minerals from soil and carbon dioxide from air.
Plants respire, grow, and reproduce similar to animals.
Some plants have unique methods of obtaining food (such as insect-eating plants).
Plants maintain balance in the environment by providing us with oxygen and food.

Chapter 11: Light: Shadows and Reflections

Light makes us able to see; it moves in a straight line.
Opague objects cast a shadow and block the light.
Mirrors and other smooth surfaces reflect light, making us able to view our image.
Shadows vary in size and shape according to the source of light.
Understanding light helps us use it in daily life, like in torches, cameras, and spectacles.

Chapter 12: Earth, Moon, and the Sun

The Earth, Moon, and Sun together cause day, night, and seasons.
The Moon does not have its own light; it looks different every night because it moves around the Earth.
Sometimes, the Sun, Earth, and Moon line up and cause eclipses.
The Earth spins to give us day and night and goes around the Sun to give us seasons.
By learning how they move, we can understand things like moon phases, tides, and eclipses.

How to Download NCERT Solutions PDF from Careers360?

Getting your Class 7 Science NCERT solutions is quick and simple:

Go to the Class 7 Science NCERT Solutions page on the Careers360 website.
Choose the chapter you want to study.
Click on the “Download PDF” button inside that chapter.
Save the file to your device, and you’re ready to begin learning anytime, anywhere!

Additional Resources

To further help your studies, we also provide resources for other classes and subjects. Explore our NCERT Solutions for various grades to get comprehensive solutions and improve your learning experience.

Explore More NCERT Resources

By providing these complete and well-structured NCERT solutions, Careers360 ensures that you have all the resources you need to excel in your Class 7 Science exams. Download now and start mastering your subjects!

Frequently Asked Questions (FAQs)

1. Has the Class 7 Science syllabus changed recently?

Minor updates or deletions may happen. It's always best to refer to the official NCERT website or school guidelines for the latest syllabus version.

2. How many chapters are there in Class 7 Science NCERT textbook?

There are 12 chapters in total, covering topics from biology, chemistry, and physics.

3. Are NCERT solutions enough for Class 7 Science exam preparation?

Yes, the solutions are written in simple and student-friendly language to help you grasp concepts better.

4. Which chapters are important for scoring high marks?

Chapters like Nutrition, Heat, Acids and Bases, Respiration, Light, and Electric Current often carry more weight in exams due to their conceptual importance.

5. Can I download Class 7 Science NCERT solutions chapter-wise?

Absolutely! You can download chapter-wise PDFs for all 12 chapters from trusted educational platforms like Careers360.

6. How do NCERT Solutions help in preparing for Class 7 Science exams?

NCERT Solutions provide detailed, step-by-step answers to textbook questions, clarify concepts, and help students avoid common mistakes. They serve as an excellent resource for homework, revision, and exam preparation by covering all types of questions, including long answers, short answers, and objective types.

Also Read

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NCERT Solutions for Class 7 Science Chapter 5 Physical and Chemical Changes

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Popular Questions

A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1) $0.34\; J$	Option 2) $0.16\; J$
Option 3) $1.00\; J$	Option 4) $0.67\; J$

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up ? Fat supplies 3.8×10⁷J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Take g = 9.8 ms⁻² :

Option 1)

2.45×10⁻³ kg

Option 2)

6.45×10⁻³ kg

Option 3)

9.89×10⁻³ kg

Option 4)

12.89×10⁻³ kg

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1) $2,000 \; J - 5,000\; J$	Option 2) $200 \, \, J - 500 \, \, J$
Option 3) $2\times 10^{5}J-3\times 10^{5}J$	Option 4) $20,000 \, \, J - 50,000 \, \, J$

A particle is projected at 60⁰ to the horizontal with a kinetic energy $K$ . The kinetic energy at the highest point

Option 1) $K/2\,$	Option 2) $\; K\;$
Option 3) $zero\;$	Option 4) $K/4$

In the reaction,

$2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}$

Option 1) $11.2\, L\, H_{2(g)}$ at STP is produced for every mole $HCL_{(aq)}$ consumed	Option 2) $6L\, HCl_{(aq)}$ is consumed for ever $3L\, H_{2(g)}$ produced
Option 3) $33.6 L\, H_{2(g)}$ is produced regardless of temperature and pressure for every mole Al that reacts	Option 4) $67.2\, L\, H_{2(g)}$ at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, $Mg_{3}(PO_{4})_{2}$ will contain 0.25 mole of oxygen atoms?

Option 1) 0.02	Option 2) 3.125 × 10^-2
Option 3) 1.25 × 10^-2	Option 4) 2.5 × 10^-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1) decrease twice	Option 2) increase two fold
Option 3) remain unchanged	Option 4) be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1) Molality	Option 2) Weight fraction of solute
Option 3) Fraction of solute present in water	Option 4) Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol^-1) is

Option 1) twice that in 60 g carbon	Option 2) 6.023 × 10²²
Option 3) half that in 8 g He	Option 4) 558.5 × 6.023 × 10²³

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t²) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m² , the number of rotations made by the pulley before its direction of motion if reversed, is