Science questions help students test how well they observe, compare, measure, classify, and explain the world around them. Class 6 Science uses activities, examples, and reasoning questions to build curiosity across living beings, materials, motion, water, temperature, magnets, and space.
Good Science revision begins with noticing patterns, not memorising lines. Important Questions Class 6 Science help students practise the new Curiosity textbook through chapter-wise questions, direct answers, examples, and activity-based reasoning. CBSE 2026 focuses on observation, comparison, measurement, classification, investigation, and explanation. The Class 6 Science book has 12 chapters, including Diversity in the Living World, Exploring Magnets, Measurement of Length and Motion, Temperature and its Measurement, A Journey through States of Water, Nature’s Treasures, and Beyond Earth. These questions support classroom learning and teacher-led revision.
Key Takeaways
- Curiosity Textbook: Class 6 Science follows 12 chapters in the NCERT Curiosity textbook for 2026.
- Question Pattern: Students should practise MCQs, short answers, long answers, diagrams, and activity-based questions.
- Core Skills: Observation, grouping, measurement, comparison, prediction, and explanation are central to Class 6 Science.
- Revision Focus: Chapter-wise practice improves recall and helps students write clearer answers.
Important Questions Class 6 Science Structure 2026
| Chapter Group |
Chapters Covered |
Main Skill Tested |
| Living World |
Chapters 2, 3, 10 |
Observe, classify, compare |
| Physical Science |
Chapters 4, 5, 7, 8, 9 |
Measure, infer, investigate |
| Earth And Space |
Chapters 11, 12 |
Identify, explain, connect |
Important Questions Class 6 Science Chapter-Wise List
The NCERT Curiosity textbook for Class 6 has 12 Science chapters.
This chapter-wise list helps students practise the full syllabus in a clear order.
Class 6 Science Important Questions With Answers
These class 6 science important questions cover all chapters from the Curiosity textbook.
Each answer begins with the main point and then explains the concept.
Q1. What Makes Science Different From Guesswork?
Science uses observation, questioning, evidence, and testing to understand the world. Guesswork does not require proof.
A student may guess that plants grow faster in shade.
A scientific investigation compares plants in shade and sunlight.
Science improves when students record observations honestly.
Q2. What Is Biodiversity?
Biodiversity is the variety of plants and animals found in a region. It includes different living beings in different habitats.
A pond may have fish, frogs, snails, lotus, and algae.
A forest may have trees, birds, insects, deer, and fungi.
Biodiversity shows how rich and varied life is.
Q3. Why Is Grouping Of Plants And Animals Useful?
Grouping helps us study plants and animals based on similarities and differences. It makes large variety easier to understand.
Plants can be grouped as herbs, shrubs, trees, climbers, and creepers.
Animals can be grouped by habitat, movement, food, or body parts.
Grouping improves clear scientific comparison.
Q4. What Is Mindful Eating?
Mindful eating means choosing food carefully for health and energy. It includes balanced food, clean habits, and awareness of food choices.
A healthy meal has cereals, pulses, vegetables, fruits, and enough water.
Junk food eaten often may harm health.
Mindful eating supports growth and daily activity.
Q5. What Is A Magnet?
A magnet is an object that attracts magnetic materials like iron, nickel, and cobalt. It has two poles called the north pole and south pole.
A magnet attracts iron nails and paper clips.
It does not attract wood, plastic, or paper.
Magnets are used in compasses, toys, bags, and many devices.
Q6. Why Do We Need Standard Units Of Measurement?
Standard units give the same measurement result everywhere. Body-based units like handspan differ from person to person.
One student’s handspan may be longer than another student’s handspan.
That makes measurements different for the same object.
Metre, centimetre, millimetre, and kilometre give standard length measurements.
Q7. What Is Motion?
Motion means change in position with time when compared with a reference point. A bus moving away from a stop is in motion.
A tree near the road is at rest with respect to the ground.
Passengers inside a moving bus may appear at rest to each other.
Motion always needs a reference point.
Q8. What Are Materials?
Materials are substances used to make objects. They can be grouped by properties like appearance, hardness, transparency, solubility, and texture.
Glass is transparent.
Wood is hard and opaque.
Grouping materials helps us choose the right material for each use.
Q9. What Is Temperature?
Temperature tells how hot or cold a body is. It is measured using a thermometer.
A clinical thermometer measures body temperature.
A laboratory thermometer measures temperatures in experiments.
Touch is not always reliable for judging temperature.
Q10. What Are The Three States Of Water?
Water exists as solid, liquid, and gas. Ice is solid water, water is liquid, and water vapour is gaseous water.
Ice melts into water on heating.
Water evaporates into water vapour.
Water changes state by heating or cooling.
Q11. What Is Separation In Everyday Life?
Separation means removing one substance from a mixture. It helps us get useful materials or remove unwanted parts.
Sieving separates flour from bran.
Filtration separates insoluble solid particles from liquid.
Separation methods depend on the properties of substances.
Q12. What Are The Characteristics Of Living Creatures?
Living creatures grow, need food, respire, respond, reproduce, and show movement. These features help identify living beings.
Plants grow and respond to sunlight.
Animals move, breathe, and need food.
Living beings show life processes.
Q13. Why Are Natural Resources Important?
Natural resources are useful materials found in nature. Air, water, soil, minerals, forests, and rocks support life and human needs.
Water is needed for drinking and farming.
Soil helps plants grow.
Natural resources must be used carefully.
Q14. What Is The Solar System?
The Solar System includes the Sun, eight planets, their moons, asteroids, and comets. Most of these objects move around the Sun.
Earth is the third planet from the Sun.
The Moon is Earth’s natural satellite.
The Sun is the main source of energy in the Solar System.
Class 6 Science Extra Questions With Answers
These class 6 science extra questions with answers help students practise beyond direct textbook reading.
They are useful for worksheets, class tests, and oral revision.
Q15. Why Is Observation Important In Science?
Observation helps students collect information using senses and tools. It is the first step in many investigations.
A student may observe leaf shape, stem type, colour, smell, or movement.
Accurate observation makes answers more reliable.
Science begins with careful observation.
Q16. Why Should We Not Pluck Leaves During A Nature Walk?
We should not pluck leaves because nature walks are meant for observation, not damage. Plants and animals should remain undisturbed.
Students can collect fallen leaves instead.
They can draw, photograph, or record observations in a notebook.
Respect for living beings is part of scientific learning.
Q17. Why Does A Compass Needle Point North-South?
A compass needle points north-south because Earth behaves like a giant magnet. The needle is a small magnet.
Its north-seeking end points towards the north direction.
This makes a compass useful for finding directions.
Compass use connects magnets with navigation.
Q18. How Can We Measure A Curved Line?
A curved line can be measured using a thread. The thread is placed along the curve and then straightened.
After straightening, measure the thread with a scale.
This method works for curved edges and outlines.
A flexible measuring tape can also measure curved lengths.
Q19. Why Is A Digital Clinical Thermometer Safer Than A Mercury Thermometer?
A digital clinical thermometer is safer because it does not contain toxic mercury. It also shows readings clearly.
Mercury is harmful if a thermometer breaks.
Digital thermometers work with heat sensors.
This makes them safer for home use.
Q20. Why Do Water Droplets Form Outside A Cold Glass?
Water droplets form due to condensation. Water vapour in air touches the cold glass and changes into liquid droplets.
The droplets do not come from inside the glass.
They form on the outer surface from air moisture.
Condensation changes water vapour into liquid water.
Q21. Why Is Evaporation Faster On A Hot And Windy Day?
Evaporation is faster on a hot and windy day because heat and moving air help water vapour leave quickly. More exposed surface also increases evaporation.
Wet clothes dry faster in sunlight.
They dry even faster when wind moves over them.
Heat and air movement increase evaporation.
Q22. Why Is Filtration Used?
Filtration separates insoluble solid particles from a liquid. It works when the solid does not dissolve.
Tea leaves can be separated from tea using a strainer.
Sand can be separated from water using filter paper.
Filtration depends on particle size.
Curiosity Class 6 Science Important Questions For 2026 Exams
These curiosity class 6 science important questions follow the new Class 6 textbook approach.
They test understanding through examples, activities, and simple explanations.
Q23. How Should Students Revise Class 6 Science Chapter-Wise?
Students should revise one chapter at a time using definitions, examples, diagrams, and solved questions. This keeps revision organised.
First read the chapter summary.
Then practise short answers, MCQs, and activity-based questions.
Chapter-wise revision reduces confusion before exams.
Q24. Why Are Activity-Based Questions Important In Class 6 Science?
Activity-based questions test whether students understand how a concept works. They check observation, prediction, and reasoning.
A question may ask why handspan is not a standard unit.
Another may ask why water disappears from a steel plate.
Such questions test thinking, not memorisation.
Q25. Which Chapters Need More Practice In Class 6 Science?
Measurement, temperature, water states, separation, living characteristics, and Beyond Earth need regular practice. These chapters include definitions and reasoning.
Students should practise diagrams, examples, and conversion-based questions.
They should also revise key terms from each chapter.
These chapters often need clear explanations.
Class 6 Science Chapter Wise Questions
These class 6 science chapter wise questions help students revise every chapter quickly.
Use them for self-testing after completing each chapter.
Q26. Class 6 Science Chapter 2 Important Questions
Chapter 2 focuses on biodiversity, grouping, habitats, roots, venation, and adaptations. Students should know examples from plants and animals.
- What is biodiversity?
- What are herbs, shrubs, and trees?
- What is reticulate venation?
- What is parallel venation?
- What is a habitat?
- What are adaptations?
- Why do desert plants have fleshy stems?
- How are taproots different from fibrous roots?
Q27. Class 6 Science Chapter 5 Important Questions
Chapter 5 focuses on measurement, standard units, reference point, motion, and types of motion. Students should practise examples and simple conversions.
- Why do we need standard units?
- What is the SI unit of length?
- How do you measure with a broken scale?
- What is a reference point?
- What is motion?
- What is linear motion?
- What is circular motion?
- What is oscillatory motion?
Q28. Class 6 Science Chapter 12 Important Questions
Chapter 12 focuses on stars, constellations, the Solar System, planets, moons, asteroids, comets, and the Milky Way. Students should revise names and examples.
- What are stars?
- What are constellations?
- What is the Pole Star?
- What is the Solar System?
- Name the eight planets in order.
- What is a natural satellite?
- What are asteroids?
- What is the Milky Way Galaxy?
Class 6 Science MCQ Questions With Answers
These class 6 science mcq questions with answers cover common exam-style facts.
Students should read each option carefully before choosing the answer.
Q29. MCQ Practice Set For Class 6 Science
Choose the correct answer for each question.
- Which unit is used to measure length?
(A) kilogram
(B) metre
(C) second
(D) litre
Answer: (B) metre
- Which plant has a soft green stem?
(A) Tree
(B) Shrub
(C) Herb
(D) Climber
Answer: (C) Herb
- Which thermometer is used to measure body temperature?
(A) Laboratory thermometer
(B) Clinical thermometer
(C) Room thermometer
(D) Weather thermometer
Answer: (B) Clinical thermometer
- Which process changes water into water vapour?
(A) Freezing
(B) Condensation
(C) Evaporation
(D) Melting
Answer: (C) Evaporation
- Which planet is called the Blue Planet?
(A) Mars
(B) Venus
(C) Earth
(D) Mercury
Answer: (C) Earth
- Which object is Earth’s natural satellite?
(A) Sun
(B) Moon
(C) Mars
(D) Comet
Answer: (B) Moon
Class 6 Science Worksheet Questions
These class 6 science worksheet questions can be used for classroom practice.
They include fill in the blanks, true or false, and short answers.
Q30. Fill In The Blanks
These questions test basic recall from the Class 6 Science syllabus.
- The SI unit of length is ________.
Answer: metre
- The process of water vapour changing into water is ________.
Answer: condensation
- The pattern of veins on a leaf is called ________.
Answer: venation
- The Moon is Earth’s natural ________.
Answer: satellite
- A device used to measure temperature is called a ________.
Answer: thermometer
Q31. True Or False Questions
These questions test whether students can identify correct scientific statements.
- Handspan is a standard unit of measurement.
Answer: False
- Water vapour is a gaseous state of water.
Answer: True
- A magnet attracts all materials.
Answer: False
- The Sun is a star.
Answer: True
- Plants with parallel venation generally have fibrous roots.
Answer: True
Class 6 Science Important Links