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Central Board of Secondary Education will conduct CBSE Class 10 Science Exam 2025 on February 20, 2025. The examination will be held from 10.30 am to 1.30 pm. The CBSE Class 10 board examination will be held at 7842 examination centres from India and 26 countries abroad.
To help students appearing for Class 10 Science examination, Rachna Arora, Educator Senior Years, Shiv Nadar School, Noida has shared key topics to focus on, how to answer long questions efficiently, essential diagrams to practice for the examination, time management tricks and final tips for preparation.
Key Topics to Focus On:
Physics (25 Marks):
⦁ Light: Ray Diagrams, and Numerical questions
⦁ Human Eye and Colourful World: Vision Defects, Atmospheric Refraction
⦁ Electricity: Ohm’s Law, Circuits, Power and Energy Numerical questions
⦁ Magnetic Effect of Current: Right-Hand Rule, Fleming’s Left-Hand Rule, Electromagnetic Induction
Chemistry (25 Marks):
⦁ Chemical Reactions: Types of reactions, Balancing Equations
⦁ Acids, Bases, and Salts: Formulas, Properties, Common Salts (Baking Soda, Plaster of Paris, Bleaching Powder)
⦁ Metals and Non-Metals: Ionic Bonding, Calcination, Roasting, Electrolytic Refining
⦁ Carbon Compounds: Properties of Ethanol, Ethanoic Acid, Esterification, Functional Groups, Saponification
Biology (30 Marks):
⦁ Life Processes: Nutrition, Respiration, Circulation, Excretion
⦁ Control and Coordination: Nervous System, Animal and Plant Hormones
⦁ Reproduction: Asexual and Sexual Reproduction, Sex determination
⦁ Heredity and Evolution: Mendel’s Laws, Monohybrid and Dihybrid Cross
⦁ Our Environment: Bio magnification, Ozone Layer Depletion, Food Web
Answering Long Questions Effectively:
⦁ Understand the Question: Identify keywords like ‘Explain,’ ‘Describe,’ or ‘Justify.’
⦁ Structured Response: Use bullet points, short paragraphs, and subheadings.
⦁ Include Diagrams: Labelled diagrams can boost marks.
⦁ Use Correct Terms: Technical accuracy strengthens your answer.
⦁ Be Concise: Stay relevant and avoid unnecessary details.
Essential Diagrams to Practice:
⦁ Physics: Ray diagrams (mirrors/lenses), Vision defects, Atmospheric Refraction, Electric Circuits, Magnetic Fields of current carrying wires
⦁ Chemistry: Depiction of covalent and ionic bonds, Isomers, Electrolytic Refining
⦁ Biology: Digestive System, Heart, Brain, Nephron, Flower Structure, Mendelian Crosses, Cross section of Leaf, Endocrine system, Food Webs
What Not to Miss:
⦁ Case Study-Based Questions: Strengthen your application-based understanding.
⦁ Numerical questions: Master formulas and practice varied question.
⦁ Experiments: Understand NCERT activities and their principles.
⦁ Real-Life Applications: Expect questions on daily science concepts (e.g., soap vs. detergent, greenhouse effect).
CBSE 10th Exams 2025: A science teacher’s guide to avoiding common mistakes
Time Management for the Exam:
⦁ Use the 15-minute Reading Time Smartly: Read and interpret the questions carefully. Identify the best option in choice-based questions.
⦁ Section A (16 MCQs and 4 Assertion-Reason- 1 Mark each) – 30 minutes
Read carefully and eliminate incorrect options.
⦁ Section B (6 Very Short Answers – 2 Marks Each) – 25 minutes
Write precise, formula-supported answers.
⦁ Section C (7 Short Answers – 3 Marks Each) – 45 minutes
Stick to key points, using flowcharts or bullets when possible.
⦁ Section D (3 Long Answers – 5 Marks Each) – 40 minutes
Write structured responses with diagrams where needed.
⦁ Section E (3 Case Studies) – 25 minutes
Carefully analyse the passage before answering.
⦁ Revision – 15 minutes
Double-check numerical calculations, diagrams, and clarity of answers.
⦁ Attempt easier questions first to gain momentum.
CBSE board exam 2025 begins tomorrow, dress code, items allowed, exam day instructions
Final Tips for Success:
⦁ Practice Previous Year Papers: Understand the question format and marking scheme.
⦁ Use Mnemonics and Flashcards: Great for quick concept recall.
⦁ Stay Calm and Confident: Believe in your hard work and knowledge.
⦁ Prioritize Health: In the run-up to exams, rest well, eat nutritious food, and practice mindfulness to keep stress at bay.
⦁ Maintain Neatness: Clear handwriting and well-structured answers create a good impression. Regular written practice enhances clarity and presentation.
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