Class 10 Science Important Questions

CBSE board exams are not based on random questions. Most questions are directly or indirectly framed from NCERT textbooks, examples, and exercises. Focusing on important questions helps students:

• Revise the full syllabus in a structured way

• Understand high-weightage chapters clearly

• Improve answer-writing skills

• Reduce exam stress and confusion

• Score better with smart preparation

Teachers and toppers consistently suggest revising chapter-wise important questions before the final exam.

CBSE Class 10 Science Exam Pattern (Overview)

Before starting revision, it is important to understand the exam structure:

• Theory Exam: 80 Marks

• Internal Assessment: 20 Marks

• Time Duration: 3 Hours

Question Paper Includes:

• MCQs

• Very Short & Short Answer Questions

• Long Answer Questions

• Case-Based Questions

Most long and case-based questions are asked from conceptually strong chapters.

Chapter-Wise Class 10 Science Important Questions

Below is a chapter-wise breakdown based on NCERT content and CBSE trends.

1. Chemical Reactions and Equations

Important Areas:

• Balancing chemical equations

• Types of chemical reactions

• Corrosion and rancidity

• Writing word equations

This chapter is frequently tested through MCQs and short questions.

2. Acids, Bases and Salts

Most Asked Questions:

• Properties of acids and bases

• pH scale and its applications

• Common salts like washing soda and baking soda

• Chemical names and uses

Questions from daily life applications are very common.

3. Metals and Non-Metals

High-Weightage Topics:

• Properties and uses of metals

• Extraction of metals

• Corrosion and prevention

• Reactivity series

This chapter often appears in long-answer format.

4. Carbon and Its Compounds

Important Questions Include:

• Covalent bonding

• Homologous series

• Ethanol and ethanoic acid

• Soaps and detergents

Clear concepts and diagrams help score full marks.

5. Life Processes

Key Topics:

• Nutrition, respiration, transportation, and excretion

• Human digestive system

• Heart and blood circulation

Diagram-based questions are very important here.

6. Control and Coordination

Frequently Asked Areas:

• Nervous system

• Endocrine glands and hormones

• Reflex action

This chapter is concept-based and scoring.

7. How Do Organisms Reproduce

Important Points:

• Asexual and sexual reproduction

• Human reproductive system

• Reproductive health

Labelled diagrams are often asked.

8. Heredity and Evolution

High-Scoring Topics:

• Mendel’s experiments

• Genotype and phenotype

• Acquired vs inherited traits

Numerical-based questions are common.

9. Light – Reflection and Refraction

Most Important Questions:

• Ray diagrams

• Mirror and lens formula

• Magnification

Practice diagrams neatly for full marks.

10. Human Eye and the Colourful World

Important Areas:

• Defects of vision

• Dispersion of light

• Atmospheric refraction

Short and case-based questions are common.

11. Electricity

High-Weightage Topics:

• Ohm’s Law

• Electric power

• Numerical problems

This chapter requires regular practice.

12. Magnetic Effects of Electric Current

Important Questions:

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

• Electromagnet vs permanent magnet

• Electric motor

Diagrams play a key role here.

13. Our Environment

Key Topics:

• Food chains and food webs

• Trophic levels

• Biodegradable vs non-biodegradable waste

Mostly theory-based and easy to score.

14. Resources and Development (Environment Part)

Frequently Asked:

• Renewable and non-renewable resources

• Sustainable development

Short questions are common from this chapter.

Smart Strategy to Prepare Class 10 Science Important Questions

1. Study NCERT Line by Line

Most CBSE questions are directly picked from NCERT text, examples, and diagrams.

2. Practice Previous Year Questions

Solving past papers helps understand question patterns and marks distribution.

3. Focus on Diagrams and Definitions

Neat diagrams and correct scientific terms increase your score.

4. Revise Regularly

Make short notes for formulas, reactions, and key points.

Common Mistakes Students Should Avoid

• Ignoring NCERT diagrams

• Not practicing numericals

• Writing long but irrelevant answers

• Skipping revision before exams

Avoiding these mistakes can significantly improve results.

Final Revision Tips for Class 10 Science

• Revise high-weightage chapters first

• Practice case-based questions

• Learn chemical equations properly

• Stay calm and confident during the exam