Most Important Chapters for BOSEM Class 10
Not all chapters are equal. These chapters appear most frequently in BOSEM papers and carry the highest marks. Start here.
This priority list is based on BOSEM exam patterns and mark distribution. All chapters are in the syllabus - this guide helps you allocate study time strategically.
Focus 60% of time⭐⭐ Very Highpriority chapters
Allocate 30% of time⭐ Highpriority chapters
Reserve 10% for revision🔵 Mediumpriority chapters
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MATHEMATICS
| Chapter | Priority | What to Expect |
|---|---|---|
| Quadratic Equations | ⭐⭐ | 5-6 mark long answer, factorisation or formula method |
| Triangles | ⭐⭐ | Proof questions, similarity theorems, 5-6 marks |
| Arithmetic Progressions | ⭐⭐ | nth term and sum formula, 3-5 mark questions |
| Trigonometry (both chapters) | ⭐⭐ | Identity proofs + Heights & Distances application |
| Statistics | ⭐ | Mean/Median/Mode from frequency tables |
| Surface Areas & Volumes | ⭐ | Combined shapes, 3-5 marks |
| Linear Equations | ⭐ | Graphical or algebraic method |
| Real Numbers | ⭐ | HCF/LCM, Euclid's algorithm |
| Coordinate Geometry | 🔵 | Distance formula, section formula |
| Circles | 🔵 | Tangent theorems |
| Probability | 🔵 | Simple probability problems |
What BOSEM Maths examiners reward
- Every step shown = every mark earned
- 'Therefore' before final answer
- Units included in word problems
- Proof format: Given / To Prove / Proof / Hence Proved
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SCIENCE
Physics
| Electricity | ⭐⭐ | V=IR calculations, series/parallel circuits, 5-6 marks |
| Light: Reflection & Refraction | ⭐⭐ | Mirror/lens formula + ray diagram, 5 marks |
| Human Eye | ⭐ | Defects and correction, diagram of eye structure |
| Magnetic Effects | ⭐ | Fleming's rules, electromagnetic induction |
| Sources of Energy | 🔵 | Objective and short answers only |
Chemistry
| Chemical Reactions | ⭐⭐ | Balancing equations, types of reactions, always asked |
| Metals and Non-metals | ⭐ | Reactivity series, extraction methods |
| Carbon Compounds | ⭐ | Nomenclature, functional groups, isomers |
| Acids Bases Salts | ⭐ | pH scale, neutralisation, salts formation |
| Periodic Classification | 🔵 | Mendeleev's table, periodic trends |
Biology
| Life Processes | ⭐⭐ | Nutrition/Respiration diagrams, excretion - always in paper |
| Heredity and Evolution | ⭐⭐ | Mendel's laws, Punnett square - guaranteed question |
| Control and Coordination | ⭐ | Nervous system, reflex arc diagram |
| Reproduction | ⭐ | Asexual and sexual, human reproductive system |
| Our Environment | ⭐ | Food chains, 10% energy law, trophic levels |
| Natural Resources | 🔵 | Short answers, objective questions |
What BOSEM Science examiners reward
- Diagrams are worth 3-5 marks
- Label minimum 4 parts for full diagram marks
- Define before explaining
- Use Manipur examples where possible
🔬
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SOCIAL SCIENCE
HISTORY
| Nationalism in India | ⭐⭐ | Non-Cooperation, Civil Disobedience, Quit India - 5-6 mark long answer every year |
| Rise of Nationalism in Europe | 🔵 | Objective and short answer |
| Industrialisation | 🔵 | Short answer |
| Print Culture | 🔵 | Objective questions |
| Global World | 🔵 | Short answer |
GEOGRAPHY
| Water Resources | ⭐ | Multipurpose projects, water scarcity |
| Agriculture | ⭐ | Types of farming, Green Revolution, crops |
| Resources and Development | ⭐ | Types of resources, land use |
| Minerals and Energy | 🔵 | Types and distribution |
| Manufacturing | 🔵 | Industries, location factors |
| Lifelines | 🔵 | Transport, communication |
POLITICAL SCIENCE
| Power Sharing | ⭐⭐ | Belgium vs Sri Lanka, forms of power sharing |
| Federalism | ⭐ | Centre-state division, India's federal structure |
| Democracy and Diversity | 🔵 | Social divisions |
| Political Parties | 🔵 | Functions and challenges |
| Outcomes of Democracy | 🔵 | Short answer |
ECONOMICS
| Sectors of Indian Economy | ⭐ | Primary/Secondary/Tertiary, organised/unorganised |
| Globalisation | ⭐ | MNCs, effects on India |
| Development | 🔵 | HDI, income comparison |
| Money and Credit | 🔵 | Banking, credit |
| Consumer Rights | 🔵 | COPRA, consumer courts |
What BOSEM Social Science examiners reward
- Numbered points, not paragraphs
- Key dates prominently stated
- Key terms used correctly
- Specific names and events
🗺️
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ENGLISH
SKILLS
| Letter Writing | ⭐⭐ | Formal or informal letter, 5-8 marks, format + content |
| Essay/Paragraph Writing | ⭐⭐ | 200-250 words, structured format, 5-6 marks |
| Notice Writing | ⭐ | Standard format, 3-4 marks |
| Grammar | ⭐⭐ | Active/Passive, Tenses, Reported Speech - always tested |
| Reading Comprehension | ⭐ | Passage-based, 3-5 mark questions |
| Extract Questions | ⭐ | From First Flight chapters, 2-3 marks |
Most tested First Flight chapters
Nelson MandelaAnne FrankGlimpses of IndiaMijbil the OtterThe Proposal
Most tested Footprints chapters
The Thief's StoryBholiThe NecklaceFootprints without Feet
What BOSEM English examiners reward
- Format sections have separate marks
- Never skip Subject line, date, or salutation
- Grammar must be contextually correct
- Comprehension: use the passage's own words as evidence
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Start with the chapters that matter most
LAIRIK AI focuses on exactly these high-priority chapters and teaches you to write answers the way BOSEM examiners reward them.