The book 'National Science Olympiad' has been divided into five sections namely Science, Logical Reasoning, Achievers section, Subjective section, Model Papers. In every chapter, the theory has been explained through solved examples, illustrations and diagrams wherever required. Multiple Choice Questions (MCQs) with detailed solutions are provided in the end of each chapter to enhance the problem solving skills of candidates. The questions in the Achievers section are set to evaluate scientific skills of brilliant students whereas the Subjective section includes questions of descriptive nature. Two Model Papers have been included to do practice on the expected questions. A CD containing Study Chart for systematic preparation, Tips & Tricks to crack Science Olympiad, Pattern of exam, and links of Previous Years Papers is accompanied with this book. The book is also useful for various competitive exams such as NTSE, NSTSE, and SLSTSE as well. #v&spublishers CONTENTS: I. SECTION 1: SCIENCE 1. Motion 2. Force and Laws of Motion 3. Gravitation 4. Work and Energy 5. Sound 6. Matter in Our Surroundings 7. Is Matter Around us Pure 8. Atoms and Molecules 9. Structure of Atom 10. Cell–The Fundamental Unit of Life 11. Tissues 12. Diversity in Living Organisms 13. Why do We Fall Ill 14. Natural Resources 15. Improvement in Food Resources II. SECTION 2: LOGICAL REASONING 1. Analogy 2. Classificatio 3. Series Completion 4. Coding and Decoding 5. Number, Ranking, and Time Sequence Test 6. Alphabet Test 7. Blood Relation Test 8. Mathematical Operations 9. Arithmetical Reasoning 10. Inserting the Missing Character 11. Series 12. Paper Cutting 13. Mirror Images 14. Water Images 15. Cubes and Dice 3. SECTION 3: ACHIEVERS’ SECTION Higher Order Thinking Skills (HOTS) SHORT ANSWER QUESTIONS MODEL TEST PAPER – 1 MODEL TEST PAPER – 2 MODEL TEST PAPER – 3 HINTS AND SOLUTIONS