Chapter wise CBSE Important Questions for class 10 Science

 

Important Questions for CBSE Class 10 Science

CBSE Class 10 Science is a high-scoring subject that integrates Physics, Chemistry, and Biology. Scoring well in Science can significantly boost a student’s overall percentage. With the board exams setting a strong academic foundation, focusing on important questions from each chapter is a smart and effective revision strategy.

Why Focus on Important Questions?

Important questions for class 10 Science are selected based on the latest CBSE syllabus, previous year trends, and topics with high weightage. These questions often reflect the core concepts and applications that are frequently tested in exams. Practicing them helps students:

  • Gain clarity in fundamental concepts

  • Prepare effectively within a limited time

  • Familiarize themselves with the exam pattern

  • Build confidence for board exams

Chapter-Wise Important Questions

Here are some crucial questions from major chapters:

Physics

  • Light – Reflection and Refraction: Ray diagram-based numerical questions, laws of reflection, mirror and lens formula applications.

  • The Human Eye and the Colourful World: Functions of the eye, persistence of vision, refraction through the prism, and atmospheric refraction.

  • Electricity: Ohm’s law, series and parallel combinations of resistors, the heating effect of current.

  • Magnetic Effects of Electric Current: Magnetic field due to current, Fleming’s left and right-hand rules.

Chemistry

  • Chemical Reactions and Equations: Types of reactions, balancing equations, and identifying oxidizing and reducing agents.

  • Acids, Bases and Salts: Properties, reactions with metals and carbonates, pH scale.

  • Metals and Non-metals: Physical and chemical properties, corrosion, and prevention.

  • Carbon and Its Compounds: Covalent bonding, functional groups, homologous series.

Biology

  • Life Processes: Functions of digestive, respiratory, circulatory, and excretory systems.

  • How Do Organisms Reproduce?: Modes of reproduction, diagrams of the human reproductive system.

  • Heredity and Evolution: Mendel’s laws, trait inheritance, sex determination.

  • Our Environment: Food chains, ozone layer, waste management.

Preparation Tips

  • Practice diagrams and label them correctly.

  • Focus on NCERT textbook questions and exemplar problems.

  • Solve previous years’ board papers and sample questions.

  • Make concise notes for quick revision before the exam.

By practicing these important questions regularly and revising key concepts, students can boost their confidence and improve their performance in the Class 10 Science board exam.

The right way to use CBSE Important Questions for class 10 science

Important Questions for CBSE Class 10 Science: Chapter-wise Guide for Board Success

Preparing for the CBSE Class 10 Science board exam can feel overwhelming, but focusing on important questions from each chapter is a proven way to streamline your revision and boost your confidence. These questions are curated based on the latest CBSE syllabus, previous years’ trends, and the types of questions most frequently asked in exams.

Why Practice Important Questions for Class 10 Science?

  • Targeted Revision: Important questions help you focus on high-weightage topics and key concepts, ensuring efficient and effective study sessions.

  • Exam Pattern Familiarity: They mirror the types of questions (MCQs, short answers, long answers, assertion-reason, and case-based) you are likely to encounter in the board exam.

  • Boosts Confidence: Regular practice of these questions strengthens your understanding and helps you tackle a variety of question formats with ease.

  • Improves Time Management: Solving important questions under timed conditions prepares you to manage your time during the actual exam.

Chapter-wise Important Questions for CBSE Class 10 Science

1. Chemical Reactions and Equations

  • Define the law of conservation of mass and explain with an example.

  • Write balanced equations for the given chemical reactions.

  • Identify types of chemical reactions: combination, decomposition, displacement, and redox.

2. Acids, Bases, and Salts

  • Explain the pH scale and its importance.

  • Describe the reaction between acids and metals, and acids and bases.

  • Discuss the preparation and uses of common salts.

3. Metals and Non-Metals

  • Compare the physical and chemical properties of metals and non-metals.

  • Explain the reactivity series and displacement reactions.

  • Describe corrosion and its prevention.

4. Carbon and Its Compounds

  • What are covalent bonds? Give examples.

  • Explain homologous series and isomerism.

  • Write IUPAC names for the given organic compounds.

5. Periodic Classification of Elements

  • State Mendeleev’s and Modern Periodic Law.

  • Discuss trends in the periodic table (atomic size, valency, metallic/non-metallic character).

6. Life Processes

  • Describe the process of photosynthesis and respiration.

  • Explain the human digestive and circulatory systems with diagrams.

  • Differentiate between aerobic and anaerobic respiration.

7. Control and Coordination

  • Explain the structure and function of the human brain.

  • Describe plant hormones and their roles.

  • Discuss reflex action and synapses.

8. How do Organisms Reproduce?

  • Compare asexual and sexual reproduction.

  • Explain the process of fertilization in flowering plants.

  • Describe human reproductive systems.

9. Heredity and Evolution

  • State Mendel’s laws of inheritance with examples.

  • Explain sex determination in humans.

  • Discuss evolution and speciation.

10. Light: Reflection and Refraction

  • Draw ray diagrams for image formation by mirrors and lenses.

  • State and explain the laws of reflection and refraction.

  • Solve numerical problems on the lens/mirror formula.

11. The Human Eye and the Colourful World

  • Explain the structure and working of the human eye.

  • Describe common defects of vision and their correction.

  • Discuss atmospheric refraction phenomena (rainbow, twinkling of stars).

12. Electricity

  • State Ohm’s law and solve numerical problems.

  • Draw and interpret circuit diagrams.

  • Differentiate between series and parallel circuits.

13. Magnetic Effects of Electric Current

  • Explain electromagnetic induction and its applications.

  • Draw labelled diagrams of an electric motor and a generator.

  • State Fleming’s left-hand and right-hand rules.

14. Sources of Energy

  • Compare conventional and non-conventional sources of energy.

  • Discuss the advantages and disadvantages of renewable energy sources.

15. Our Environment

  • Explain food chains and food webs.

  • Discuss the impact of human activities on the environment.

  • Describe the importance of waste management.

16. Management of Natural Resources

  • List methods for the conservation of water, forests, and wildlife.

  • Explain sustainable management practices.

Tips to Use Important Questions Effectively

  • Integrate with NCERT Practice: Use these questions along with NCERT textbook exercises for comprehensive preparation.

  • Simulate Exam Conditions: Solve questions under timed conditions to improve speed and accuracy.

  • Review and Revise: Regularly revisit difficult questions and clarify doubts for better retention.

  • Practice All Formats: Cover MCQs, short and long answers, assertion-reason, and case-based questions for complete readiness.

They will see the practical aspect of the science topics and will learn their application simultaneously. Thus, their education will not be just rote learning. Instead, it will add some value to their life. Because math is regarded as the most fundamental of all subjects, a good comprehension of the subject is essential. Science in class 10 will form the base of higher studies, and students must pay attention to all the topics of the syllabus and should listen to their teachers carefully in class.

Benefits of solving CBSE Important Questions for class 10 science 

Solving the printable science CBSE Important Questions for Class 10 has various advantages. We've highlighted a handful of them below.

1. These CBSE Important questions are curriculum-based and cover all of the essential science concepts.

2. Students will be more engaged with the topics if they practice questions from the CBSE Important Questions.

3. CBSE Important questions will assist pupils in gaining a solid understanding of the subjects presented in school.

4. Students' analytical and problem-solving skills will increase due to completing CBSE Important Questions.

5. These CBSE Important Questions help you establish a study regimen. 

Frequently Asked Questions

 

Identifying important questions in Class 10 Science requires a focused and analytical approach. The CBSE Science syllabus includes Physics, Chemistry, and Biology, and each section contributes equally to the exam paper. To identify crucial questions:

  • Analyze Previous Year Papers: Review the last 5–10 years of CBSE question papers. Mark the questions or concepts that are frequently repeated.

  • Understand the Exam Blueprint: CBSE releases sample papers and marking schemes every year. They show chapter-wise weightage, helping you focus on high-priority topics.

  • Refer to the NCERT Textbook: Most questions in the board exam are derived directly or indirectly from the NCERT textbook and its exercises. Also, the in-text questions and activities often contain core concepts.

  • Use NCERT Exemplar and Sample Papers: These resources provide more advanced and application-based questions, which often appear in board exams.

  • Teachers’ Input: Take note of what your school or coaching teachers emphasize. They often have insights into what types of questions are commonly tested.

  • Online Platforms: Reputable educational websites often release chapter-wise important questions and model test papers based on trend analysis.

Once you identify important questions, categorize them into short answers, long answers, and diagram-based formats for better preparation. This targeted study will help in managing time and boosting confidence before the exam.

Yes, NCERT is the most important book for preparing CBSE Class 10 Science, and in many cases, it is sufficient to score high marks—even full marks—if studied thoroughly. Here’s why:

  • Board Paper Alignment: Most CBSE board questions are either directly picked from the NCERT or are based on similar patterns and concepts. Practicing NCERT end-of-chapter questions is essential.

  • Strong Conceptual Base: The NCERT book explains scientific concepts in a concise and clear way, making it ideal for understanding basics as well as applications.

  • Activity-Based Learning: Many NCERT in-text activities are turned into theoretical or practical questions in exams. Students should not ignore these examples.

However, if you aim for full marks or want extra confidence, here are a few supplemental strategies:

  • NCERT Exemplar Problems: These are more advanced than regular textbook questions and build strong application and analytical skills.

  • CBSE Sample Papers and PYQs: Solve sample and previous year papers to get familiar with question framing and common patterns.

  • Important Question Banks: Use curated lists of important questions for quick revisions.

In short, NCERT is your foundation. But supplementing it with focused practice from other resources can further strengthen your preparation and boost your chances of scoring top marks.

Practicing important Science questions effectively requires more than just solving them once. It involves active revision, regular testing, and a deep understanding of each concept. Here's a step-by-step strategy:

  1. Topic-Wise Segmentation: Break your syllabus into smaller topics under Physics, Chemistry, and Biology. Focus on 2–3 important questions from each sub-topic.

  2. Use a Dedicated Revision Notebook: Maintain a separate notebook for important questions and answers. Include diagrams, equations, definitions, and key points.

  3. Practice Diagrams & Labeling: Biology especially includes questions based on labeled diagrams. Repeated practice helps improve clarity and presentation.

  4. Timed Practice: Solve important questions under timed conditions, similar to a real exam. This helps with time management and reduces exam anxiety.

  5. Review Errors: After each practice session, review your mistakes. Understanding why an error happened is crucial for avoiding it in the board exam.

  6. Use Flashcards or Charts: For definitions, laws (like Ohm’s Law, Mendel’s Laws), and chemical reactions, quick-reference tools like flashcards can be useful for memorization.

  7. Mock Tests & Sample Papers: Regularly attempt full-length mock tests. This will help you integrate knowledge across chapters and understand how important questions fit into longer-format answers.

Consistency in practice, regular self-assessment, and focused revision using important questions will build strong preparation and help you perform with confidence in the CBSE Class 10 Science exam.

You should solve class 10 science NCERT first. After solving it you can go for other books. Remember, don't rush into many books as you won't be able to complete the syllabus. It is always better to solve one book ten times rather than solving ten books at once.

NCERT books play a CBSE Important role in any of your exams because you find all the basic concepts which are easily understood by you. NCERT books are enough to score good marks in your exams.

It is not difficult, you just need to practice questions again and again and you will be able to score good marks in your exams.

To download the chapter-wise CBSE Important Questions for Class 10 Science checks out the above page you will get the list of chapters from the Class 10 Science to click on the link given in the chapter and download the free pdf in just one click. 

Yes, all experts and teachers recommend the NCERT textbook for the CBSE board to score good marks in school the NCERT solutions for class 10 Science are prepared as per the CBSE Guidelines. Questions are taken from the previous year’s Science most repeated and important questions. 

The best way to use CBSE Important Questions for Class 10 Science is to read the theory part of the textbook and revise the notes on Science, download chapter-wise CBSE Important Questions for Class 10 Science prepared by the experts and start solving all the questions prepared by the HT experts to score good marks in the CBSE board exams.