UP Board Class 10 Science Chapter Wise Notes 2027 - All 16 Chapters Covered

In short: UP Board Class 10 Science 2027 follows the NCERT syllabus with 16 chapters across Physics, Chemistry, and Biology. The 70-mark written paper (50 descriptive + 20 objective) covers Chemical Reactions and Equations (balancing, types), Acids Bases and Salts (pH scale, salt preparation), Metals and Non-Metals (reactivity series, extraction), Carbon Compounds (homologous series, functional groups), Life Processes (nutrition, respiration, transport), Control and Coordination (nervous system, hormones), Reproduction (sexual/asexual, human reproductive system), Heredity and Evolution (Mendel's laws, speciation), Light (reflection, refraction, lenses), Electricity (Ohm's law, circuits), Magnetic Effects of Electric Current (Fleming's rules, motors), Sources of Energy (renewable, non-renewable), Our Environment (ecosystem, food chains), and Management of Natural Resources (conservation, dams). Chemistry and Biology sections carry the highest combined weightage.

Why These Chapter Notes Matter for UP Board 2027

UP Board (UPMSP) Class 10 Science follows the same NCERT textbook as CBSE, which means the 16 chapters are identical. However, the exam pattern is different. UP Board has a 70-mark written paper split into 50 marks descriptive and 20 marks objective, plus 30 marks for internal assessment. This means you need both conceptual understanding for long answers and quick recall for MCQs.

With 27.5 lakh students appearing for the UP Board exam, competition is intense. These chapter-wise notes give you the core concepts, key formulas, must-know diagrams, and specific exam tips for every chapter. For the complete marks distribution, see our UP Board Class 10 Science marks weightage guide.

Complete Chapter List

Chapter-Wise Notes

Chapter 1: Chemical Reactions and Equations

• Core concepts: Types of chemical reactions — combination, decomposition, displacement, double displacement, and redox. Balancing equations using the hit-and-trial method. Understanding oxidation (gain of oxygen/loss of hydrogen) and reduction (loss of oxygen/gain of hydrogen) with everyday examples like corrosion and rancidity.
• Key formulas and equations: CaCO₃ → CaO + CO₂ (decomposition), Fe + CuSO₄ → FeSO₄ + Cu (displacement), 2FeSO₄ → Fe₂O₃ + SO₂ + SO₃ (thermal decomposition). Memorize at least 15-20 balanced equations.
• Must-know diagrams: Electrolysis of water setup, decomposition of ferrous sulphate experiment.
• Exam tip: This chapter appears in both objective and descriptive sections. Expect a 3-mark question on balancing equations and a 2-mark question on identifying reaction types. Always write the state symbols — (s), (l), (g), (aq) — examiners check for this.

Chapter 2: Acids, Bases and Salts

• Core concepts: Properties of acids and bases, pH scale (0-14), indicators (litmus, phenolphthalein, methyl orange). Preparation and uses of common salts — washing soda (Na₂CO₃), baking soda (NaHCO₃), bleaching powder (CaOCl₂), Plaster of Paris (CaSO₄·½H₂O).
• Key formulas: pH < 7 = acidic, pH = 7 = neutral, pH > 7 = basic. Plaster of Paris preparation: CaSO₄·2H₂O → CaSO₄·½H₂O + 1½H₂O.
• Must-know diagrams: pH scale with examples, acid-base reaction in test tube.
• Exam tip: The preparation methods of NaOH, NaHCO₃, Na₂CO₃, and bleaching powder are directly asked as 2-3 mark questions. Write the chemical equations for each.

Chapter 3: Metals and Non-Metals

• Core concepts: Physical and chemical properties of metals and non-metals. Reactivity series (K, Na, Ca, Mg, Al, Zn, Fe, Ni, Sn, Pb, H, Cu, Hg, Ag, Au, Pt). Ionic bonding — transfer of electrons, properties of ionic compounds. Extraction of metals from ores (roasting, calcination, reduction). Corrosion and its prevention.
• Key formulas: Extraction methods depend on position in reactivity series — highly reactive metals (electrolysis), medium reactive (reduction with carbon), low reactive (self-reduction).
• Must-know diagrams: Electron dot structures for NaCl and MgCl₂, extraction flowchart.
• Exam tip: The reactivity series must be memorized. Questions on why aluminium is used despite being reactive, or why gold doesn't corrode, are common 2-mark questions.

Chapter 4: Carbon and Its Compounds

• Core concepts: Covalent bonding in carbon compounds. Versatile nature of carbon (catenation, tetravalency). Homologous series — methane to pentane. Functional groups: -OH (alcohol), -COOH (carboxylic acid), -CHO (aldehyde), -CO- (ketone). IUPAC nomenclature. Properties: combustion, oxidation, substitution, addition reactions. Soaps and detergents.
• Key formulas: General formula for alkanes CₙH₂ₙ₊₂, alkenes CₙH₂ₙ, alkynes CₙH₂ₙ₋₂. Ethanol: C₂H₅OH, Ethanoic acid: CH₃COOH.
• Must-know diagrams: Electron dot structures of methane, ethane, ethene, ethyne. Micelle formation in soap.
• Exam tip: IUPAC naming is a guaranteed 2-mark question. Practice naming at least 20 compounds. The difference between soaps and detergents is asked almost every year.

Chapter 5: Periodic Classification of Elements

• Core concepts: Dobereiner's Triads, Newlands' Law of Octaves, Mendeleev's Periodic Table (based on atomic mass), Modern Periodic Table (based on atomic number). Trends across periods: atomic size decreases, metallic character decreases, electronegativity increases. Trends down groups: atomic size increases, metallic character increases.
• Key facts: Modern periodic table has 18 groups and 7 periods. Valence electrons determine the group number for s and p block elements.
• Exam tip: A 2-3 mark question on comparing trends (period vs group) is common. Know at least 3 limitations of Mendeleev's table and how the modern table solved them.

Chapter 6: Life Processes

• Core concepts: Nutrition (autotrophic and heterotrophic), photosynthesis equation and process, human digestive system, respiration (aerobic and anaerobic), transportation in humans (heart, blood vessels, blood) and plants (xylem, phloem), excretion in humans (nephron structure and function).
• Key formulas: Photosynthesis: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. Aerobic respiration: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy.
• Must-know diagrams: Human digestive system, cross-section of heart, nephron structure, stomata, xylem and phloem transport.
• Exam tip: This is the highest-weightage Biology chapter. Diagram questions carry 3-5 marks. Practice drawing and labeling the heart, digestive system, and nephron. For a structured approach to mastering this, check our science study strategy guide.

Chapter 7: Control and Coordination

• Core concepts: Nervous system (brain structure, spinal cord, reflex arc), types of actions (voluntary, involuntary, reflex). Plant hormones (auxins, gibberellins, cytokinins, abscisic acid, ethylene) and their effects. Human endocrine system — pituitary, thyroid, adrenal, pancreas, testes, ovaries. Feedback mechanism.
• Must-know diagrams: Reflex arc, human brain (labelled), neuron structure.
• Exam tip: The reflex arc diagram is asked very frequently. Know the difference between reflex action and walking — voluntary vs involuntary. Hormones table (gland, hormone, function) is a high-value 3-mark answer.

Chapter 8: How Do Organisms Reproduce

• Core concepts: Asexual reproduction methods — fission (binary, multiple), fragmentation, regeneration, budding, vegetative propagation, spore formation. Sexual reproduction in flowering plants — pollination, fertilization, seed and fruit formation. Human reproductive system — male and female organs, menstrual cycle. Contraceptive methods.
• Must-know diagrams: Human male and female reproductive systems, longitudinal section of flower, binary fission in Amoeba, budding in Hydra.
• Exam tip: Diagram-based questions from this chapter carry 3-5 marks. The difference between self-pollination and cross-pollination, and the role of each part of the flower, are frequently tested. Learn about the UP Board model paper patterns to see how these questions appear.

Chapter 9: Heredity and Evolution

• Core concepts: Mendel's experiments with pea plants — monohybrid and dihybrid crosses. Genotype vs phenotype. Sex determination in humans (XX-XY system). Acquired vs inherited traits. Evolution — evidence from fossils, homologous and analogous organs. Speciation and natural selection.
• Key ratios: Monohybrid cross: 3:1 phenotypic ratio. Dihybrid cross: 9:3:3:1 ratio.
• Must-know diagrams: Monohybrid cross diagram, sex determination chart.
• Exam tip: The monohybrid cross with Punnett square is a guaranteed 3-5 mark question. Practice drawing the complete cross with parent genotypes, gametes, F1 generation, and F2 generation.

Chapter 10: Light — Reflection and Refraction

• Core concepts: Laws of reflection, types of mirrors (concave, convex), mirror formula (1/v + 1/u = 1/f), magnification (m = -v/u). Refraction — Snell's law, refractive index. Lenses (convex, concave), lens formula (1/v - 1/u = 1/f), power of lens (P = 1/f in metres).
• Key formulas: Mirror formula: 1/v + 1/u = 1/f. Lens formula: 1/v - 1/u = 1/f. Magnification: m = h'/h = v/u. Power: P = 1/f (in metres), unit is dioptre (D).
• Must-know diagrams: Ray diagrams for concave mirror (all 6 positions), convex lens (all 6 positions).
• Exam tip: Numericals from this chapter carry 3-5 marks. Practice at least 30 numerical problems. Ray diagram questions are also common — always use a ruler and label all points (F, C, 2F, O). For more numericals practice, see our maths study approach.

Chapter 11: Human Eye and the Colourful World

• Core concepts: Structure of human eye, accommodation, defects of vision (myopia, hypermetropia, presbyopia) and their corrections using lenses. Refraction through a prism — dispersion of white light. Atmospheric refraction — twinkling of stars, advanced sunrise. Scattering of light — Tyndall effect, blue sky, red colour of sun at sunrise/sunset.
• Must-know diagrams: Human eye structure, correction of myopia and hypermetropia, dispersion through a prism.
• Exam tip: Defects of vision with their corrections is a 3-mark question that appears almost every year. Draw neat ray diagrams showing the defect and the correcting lens.

Chapter 12: Electricity

• Core concepts: Electric current, potential difference, Ohm's law (V = IR). Resistance and factors affecting it. Series and parallel circuits — equivalent resistance calculations. Heating effect of current. Electric power (P = VI = I²R = V²/R). Electrical energy (E = Pt).
• Key formulas: V = IR, R = ρl/A, P = VI, E = Pt. Series: R = R₁ + R₂ + R₃. Parallel: 1/R = 1/R₁ + 1/R₂ + 1/R₃.
• Must-know diagrams: Circuit diagrams with ammeter and voltmeter, series and parallel combinations.
• Exam tip: This chapter carries the highest marks in Physics. Expect 2-3 numerical problems (5-6 marks total). Master the conversion between series and parallel and always write the formula, substitution, and unit in your answer.

Chapter 13: Magnetic Effects of Electric Current

• Core concepts: Magnetic field and field lines. Magnetic field due to current-carrying conductor — straight wire, circular loop, solenoid. Force on current-carrying conductor in magnetic field. Fleming's Left Hand Rule (motor) and Right Hand Rule (generator). Electric motor and generator working principles. Domestic electric circuits — fuse, earthing.
• Must-know diagrams: Magnetic field lines around a bar magnet, solenoid, electric motor, generator.
• Exam tip: Fleming's Left Hand Rule and Right Hand Rule questions are guaranteed. The difference between AC and DC generator is a common 3-mark question. Always label diagrams of motor and generator completely.

Chapter 14: Sources of Energy

• Core concepts: Conventional sources — fossil fuels, thermal power plants, hydro power. Non-conventional sources — solar energy (solar cells, solar panels), wind energy, biomass, biogas, ocean thermal energy, geothermal energy, nuclear energy (fission and fusion). Environmental consequences of each source.
• Exam tip: This is a low-weightage chapter but questions are easy. Focus on advantages and disadvantages of each energy source. Nuclear fission vs fusion is a common 2-mark question.

Chapter 15: Our Environment

• Core concepts: Ecosystem components — biotic and abiotic. Food chains and food webs. Trophic levels and 10% energy transfer law. Biological magnification. Ozone layer and its depletion — role of CFCs. Biodegradable and non-biodegradable waste.
• Must-know diagrams: Food chain showing four trophic levels, ozone formation and depletion.
• Exam tip: The 10% law question (calculate energy available at each trophic level) is a favourite 2-3 mark question. Biological magnification is frequently tested in MCQs.

Chapter 16: Management of Natural Resources

• Core concepts: Conservation of forests and wildlife — biodiversity, stakeholders. Water harvesting — traditional methods (khadin, bundhis, ahars, kattas). Coal and petroleum conservation. The three Rs — Reduce, Reuse, Recycle. Ganga Action Plan.
• Exam tip: This chapter carries low marks but the questions are direct and scoring. Focus on traditional water harvesting methods (names and regions) and the concept of sustainable development.

How to Use These Notes

The UP Board Science paper rewards students who combine conceptual understanding with exam-smart presentation. Here is the recommended approach:

1. Start with NCERT: Read each chapter from the NCERT textbook first. UP Board questions come directly from NCERT content. Highlight definitions, formulas, and diagrams.

2. Use these notes for revision: After reading a chapter, use the notes above to check if you have covered all key concepts. The bullet points serve as a checklist.

3. Practice diagrams daily: Science diagram questions carry 3-5 marks each. Draw at least 2 diagrams per day during your revision phase. Label every part.

4. Solve the objective section separately: The 20-mark objective section needs quick recall. Practice MCQs from each chapter using Padhaao's practice mode to build speed.

5. Focus on high-weightage chapters first: Electricity, Light, Life Processes, and Chemical Reactions together carry nearly 40% of the paper. Master these before moving to lower-weightage chapters.

6. Write mock answers: For the 50-mark descriptive section, practice writing 3-mark and 5-mark answers within time limits. Use the answer writing strategy guide for formatting tips.

7. Manage your 3 hours wisely: Use the time management strategy to allocate time per section. Attempt the objective section first since those are guaranteed marks.

Priority Chapters by Weightage

Frequently Asked Questions

Is UP Board Science syllabus same as CBSE?

Yes, UP Board Class 10 Science follows the NCERT textbook with the same 16 chapters as CBSE. The content is identical. The difference is in the exam pattern — UP Board has a 70-mark paper (50 descriptive + 20 objective) while CBSE has an 80-mark paper. The internal assessment weightage also differs.

How many chapters are there in UP Board Class 10 Science?

There are 16 chapters in UP Board Class 10 Science, divided across three sections: Chemistry (Chapters 1-5), Biology (Chapters 6-9 and 15-16), and Physics (Chapters 10-14). All chapters are from the NCERT Class 10 Science textbook.

Which chapters carry the most marks in UP Board Science?

The highest-weightage chapters are Electricity (5-6 marks), Light — Reflection and Refraction (5-6 marks), Life Processes (5-6 marks), and Chemical Reactions and Equations (5-6 marks). Together, these four chapters account for approximately 22-24 marks out of 70.

How should I prepare for the 20-mark objective section?

The objective section includes MCQs, fill-in-the-blanks, true/false, and match-the-following. Revise NCERT end-of-chapter questions, especially the one-line definitions and factual points. Practice at least 500 MCQs across all chapters. NCERT Exemplar problems are excellent for this section.

Are diagrams important in UP Board Science?

Diagrams are extremely important. The descriptive section regularly includes 3-5 mark questions that require labelled diagrams. Key diagrams include the human digestive system, heart cross-section, nephron, reflex arc, human eye, electric motor, generator, and ray diagrams for mirrors and lenses. Always use a pencil and ruler for ray diagrams.

Can I score 60+ out of 70 in UP Board Science?

Yes, scoring 60+ is achievable with systematic preparation. Focus on the high-priority chapters first, master all NCERT diagrams, practice 30+ numericals from Physics chapters, and solve at least 3 previous year papers. The objective section (20 marks) is relatively easy if you have read NCERT thoroughly. See the UP Board last 20 days strategy for a focused revision plan.

Related Guides

• UP Board Class 10 Science Chapter-Wise Marks Weightage 2027
• UP Board Class 10 Important Questions 2027
• UP Board Class 10 Model Paper 2027 — All Subjects with Marking Scheme
• UP Board Class 10 Last 20 Days Subject-Wise Strategy
• How to Study Science Effectively for Board Exams
• Board Exam Answer Sheet — How to Write for Maximum Marks

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