CBSE 12th Science Exam Pattern 2025-26: Get Latest Paper Pattern & Marking Scheme Here

CBSE 12th 2026 ( CBSE 12th )

This exam is conducted for courses given below:
Jasleen Taneja
Updated on Sep 4, 2025 13:17 IST

By Jasleen Taneja

CBSE 12th Science Exam Pattern 2026: The Central Board of Secondary Education (CBSE) released the CBSE Class 12 Science Exam Pattern 2026. Students can check the same online on the official website at cbseacademic.nic.in. Apart from the official website, the students can check the CBSE 12th Science Exam Pattern 2026 also on this page. Knowing the exam pattern enables a student to prepare for CBSE 12th Science exams 2026 in a better way by making them aware of important aspects of an exam. Some subjects of CBSE 12th Science 2026 are common for other streams like English, mathematics etc. Subjects that exclusively come under the Science stream are Physics, Chemistry, Biology, etc.

Q:   Does CBSE give marks for wrong answers?
Q:   Does CBSE cut marks for exceeding the word limit?
Q:   How can I improve my writing and presentation skills for the CBSE 12th board exams?
Table of content
  • CBSE 12th Physics Exam Pattern 2026
  • CBSE 12th Chemistry Exam Pattern 2026
  • CBSE 12th Biology Exam Pattern 2026
  • FAQs on CBSE 12th Exam Pattern 2026 Science
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CBSE 12th Physics Exam Pattern 2026

For CBSE Class 12 Physics, the theory part has a total weightage of 70 marks. The remaining 30 marks belong to the practicals. CBSE Class 12 Physics chapter-wise exam pattern and the marking scheme are explained below. 

Unit

Topics 

Marks 

Unit-1

Electrostatics

Chapter 1: Electric Charges and Fields
Chapter 2: Electrostatic Potential and Capacitance

16

Unit-2

Current Electricity

Chapter 3: Current Electricity

Unit-3

Magnetic Effects of Current and Magnetism

Chapter 4: Moving Charges and Magnetism
Chapter 5: Magnetism and Matter

17

Unit-4

Electromagnetic Induction and Alternating Currents

Chapter 6: Electromagnetic Induction
Chapter 7: Alternating Current

Unit-5

Electromagnetic Waves

Chapter–8: Electromagnetic Waves

18

 

Unit-6

Optics

Chapter–9: Ray Optics and Optical Instruments

Chapter–10: Wave Optics

Unit-7

Dual Nature of Radiation and Matter

Chapter–11: Dual Nature of Radiation and Matter

12

 

Unit-8

Atoms and Nuclei

Chapter–12: Atoms

Chapter–13: Nuclei

Unit-9

Electronic Devices

Chapter 7 –14: Semiconductor Electronics: Materials, Devices
and Simple Circuits

7

 Practicals: The record to be submitted by the students at the time of their annual examination has to include:

  • Record of at least 8 Experiments [with 4 from each section], to be performed by the students.
  • Record of at least 6 Activities [with 3 each from section A and section B], to be performed by the students.
  • The Report of the project carried out by the students.

2 experiments 1 from each section 

7+7

 Practical record 

5

1 activity from any section 

3

Investigatory project 

3

Viva 

5

Total

30

Click Here to download the CBSE 12th Physics Marking Scheme 2026

Q&A Icon
Commonly asked questions
Q:   Where can I check and download CBSE Exam Pattern Class 10, 12?
Q:   When will CBSE 12th Syllabus release?
Q:   Where can I download the CBSE 12th marking scheme for all subjects?
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CBSE 12th Chemistry Exam Pattern 2026

For Chemistry, the theory part has a total weightage of 70 marks. The remaining 30 marks are assigned to the practicals. The table below contains CBSE class 12 exam pattern for Class 12 Chemistry Chapters and the marking scheme.

Topics 

Marks 

Theory

Solutions 

7

Electrochemistry 

9

Chemical Kinetics 

7

d -and f- block elements 

7

Coordination Compounds 

7

Haloalkaline s & Haloarnes

6

Alcohol, Phenols & Ethers 

6

Aldehydes, Ketones & Carboxylic Acids 

8

Amines 

6

Biomolecules 

7

Total

70

Practicals 

Volumetric Analysis 

8

Salt Analysis 

8

Content-Based Experiment 

6

Project 

4

Class record & viva 

4

Total

30

Click Here to download the CBSE 12th Chemistry Marking Scheme 2026

Q&A Icon
Commonly asked questions
Q:   Are questions from previous year asked in CBSE 12th boards?
Q:   What will be the mode of CBSE Class 12 Exam 2025-26?
Q:   Does CBSE provide grace marks in the class 12 exam?
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CBSE 12th Biology Exam Pattern 2026

Unit

Title

Marks

VI

Reproduction

16

VII

Genetics and Evolution

20

VIII

Biology and Human Welfare

12

IX

Biotechnology and its Applications

12

X

Ecology and Environment

10

 

Total

70

Click Here to download the CBSE 12th Biology Marking Scheme 2026

Students preparing for competitive examinations like JEE Mains, NEET etc, can check the NEET exam pattern and JEE Mains exam pattern for more information. 

Q&A Icon
Commonly asked questions
Q:   How will my Class 12 board exam marks affect my college admissions?
Q:   Will the CBSE 12th Board exams 2026 be based on 100% syllabus?
Q:   Can I be promoted without scoring passing marks in CBSE 12th?
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FAQs on CBSE 12th Exam Pattern 2026 Science

FAQs related to CBSE 12th Science Exam Pattern 2026 are provided below:

Q&A Icon
Commonly asked questions
Q:   Is it necessary to collect the original marksheet from the school after the release of the CBSE 12th result?
Q:   What happens if you take leave in CBSE 12th board exam?
Q:   Will we get sufficient time to prepare for our CBSE 12th examinations once they begin?
Q:   What things are not allowed in CBSE 12th board exams?

Explore subject-wise topics asked in CBSE 12th

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Complement of a SetEqual SetsUniversal SetFinite and Infinite SetEmpty SetSets and their RepresentationsRelations and FunctionsCartesian Products of SetsFunctionsRelationsBinomial TheoremBinomial Theorem for Positive Integral IndexComposition of Functions and Invertible FunctionTypes of FunctionsTypes of RelationsProperties of Inverse Trigonometric FunctionsInverse Trigonometric FunctionsBasic Concepts of Inverse Trigonometric FunctionsTypes of MatrixTranspose of a MatrixSymmetric and Skew Symmetric MatricesInvertible MatricesOperations on MatricesDeterminantsDeterminantsIntegration as Inverse Process of DifferentiationDifferentiationStandard DeviationAssumed Mean MethodCorrelation and RegressionZ Score TableCube and CuboidComplement of a SetEqual SetsUniversal SetFinite and Infinite SetEmpty SetSets and their RepresentationsRelations and FunctionsCartesian Products of SetsFunctionsRelationsBinomial TheoremBinomial Theorem for Positive Integral IndexComposition of Functions and Invertible FunctionTypes of FunctionsTypes of RelationsProperties of Inverse Trigonometric FunctionsInverse Trigonometric FunctionsBasic Concepts of Inverse Trigonometric FunctionsTypes of MatrixTranspose of a MatrixSymmetric and Skew Symmetric MatricesInvertible MatricesOperations on MatricesDeterminantsDeterminantsIntegration as Inverse Process of DifferentiationDifferentiationStandard DeviationAssumed Mean MethodCorrelation and RegressionZ Score TableCube and CuboidOverviewDIMENSIONS OF PHYSICAL QUANTITIESDIMENSIONAL FORMULAESignificant FiguresDIMENSIONAL ANALYSIS AND ITS APPLICATIONSINTERNATIONAL SYSTEM OF UNITSOverviewChange of StateIdeal Gas Equation and Absolute TemperatureThermal ExpansionHeat TransferSpecific HeatCalorimetryTemperature and HeatMeasurement of TemperatureThermodynamic ProcessCarnot EngineReversible and Irreversible ProcessThermal EquilibriumThermodynamic State Variables Equation of StateOverviewFirst Law of ThermodynamicsSecond Law of ThermodynamicsBehaviour of GasesKinetic Theory of Ideal GasOverviewPeriodic and Oscillatory MotionSimple PendulumSimple Harmonic MotionOverviewSpeed of a Travelling WaveDisplacement Relation in a Progressive WaveSuperposition PrincipleBeatsReflection of WavesKinematic Equation Uniformly of Accelerated MotionInstantaneous Velocity and SpeedOverviewAccelerationResolution of VectorsVector Addition by Analytical MethodScalars and VectorsMultiplication of Vectors by Real NumbersAddition and Subtraction of VectorsOverviewProjectile MotionMotion in a PlaneConservation of MomentumEquilibrium of a ParticleCircular MotionCommon Forces in MechanicsSolving Problems in MechanicsConservation of Mechanical EnergyPotential Energy of SpringPowerKinetic EnergyCollisionWorkConcept of Potential EnergyMoment of InertiaOverviewCentre of MassVector Product of Two VectorsTorque and Angular MomentumMotion of Centre of MassEquilibrium of a Rigid BodyOverviewAngular Velocity and Relation with Linear VelocityDynamics of Rotational Motion About a Fixed AxisKinematics of Rotational Motion About a Fixed AxisAngular Momentum of Rotation About a Fixed AxisKeplers LawOverviewEscape SpeedEarth SatellitesEnergy of an Orbiting SatelliteStress Strain CurveElastic ModuliApplications of Elastic Behaviour of MaterialsSurface TensionBernoulli PrinciplePressure in FluidsViscosityStreamline FlowForces between Multiple ChargesConductors and InsulatorsBasic Properties of Electric ChargeElectric ChargeElectric Charge and FieldElectric FluxElectric Charge and FieldElectric Field LinesContinuous Charge DistributionInterference Light Waves Youngs ExperimentRefraction Reflection Plane Wave Huygens PrincipleRefraction Reflection Plane Wave Huygens PrincipleEinstein Photoelectric TheoryPhotoelectric Effect Wave Theory LightPhotoelectric EffectElectron EmissionOverviewBohr Model of Hydrogen AtomRadioactivityPhysics Nuclei OverviewSize of NucleusBinding EnergyNuclear EnergySemiconductor Devices OverviewSemiconductor Devices OverviewSemiconductor DiodeDiode as RectifierIntrinsic SemiconductorExtrinsic SemiconductorOverviewPotential Due to Point ChargeCombination of CapacitorsElectrostatic PotentialEnergy Stored in a CapacitorCapacitors and CapacitanceEffect of Dielectric on CapacitanceElectrostatics of ConductorsPotential Energy of a System of ChargesPotential due to a System of ChargesElectric CurrentOverviewElectrical Energy and PowerTemperature Dependence of ResistivityWheatstone BridgeOverviewOhms LawKirchhoffs LawDrift of Electrons and the Origin of ResistivityTorque on Current Loop Magnetic DipoleMotion in Magnetic FieldSolenoidMagnetic Field due to a Current ElementMagnetic Field on Axis of Circular Current LoopAmpere Circuital LawMagnetic ForceOverviewMoving Coil GalvanometerMagnetism and MatterMagnetic Properties of MaterialsMagnetisation and Magnetic IntensityBar MagnetElectromagnetismMotional Electromotive ForceExperiments of Faraday and HenryAlternating Current OverviewTransformerAC Voltage Applied to a ResistorAC Voltage Applied to an InductorAC Voltage applied to a CapacitorAC Voltage applied to a Series LCR circuitRepresentation of AC Current and Voltage by VectorElectromagnetic SpectrumElectromagnetic WavesDisplacement CurrentTotal Internal ReflectionRefraction through a PrismOptical InstrumentsDerivation of Lens FormulaReflection of Light by Spherical MirrorsRefraction at Spherical Surface and by LensesDerive Equation of Motion by Calculus methodAlternating Current OverviewMole Concept and Molar MassSTOICHIOMETRY AND STOICHIOMETRIC CALCULATIONSPercentage CompositionLaws of Chemical CombinationAtomic and Molecular MassesProperties of Matter and their MeasurementImportance of ChemistryOverviewOverviewAtomic ModelsDiscovery of Sub Atomic ParticlesTowards Quantum Mechanical Model of AtomQuantum Mechanical Model of AtomElectronic Configuration Types of ElementsPeriodic Table Electronic Configuration of ElementPeriodic Trends in Properties of ElementsGenesis of Periodic ClassificationNomenclature of Elements with Atomic NumbersPresent Form of Periodic TableChemical Bonding and Molecular StructureHybridizationValence Bond TheoryMolecular Orbital TheoryHydrogen BondingIonic or Electrovalent BondKossel-Lewis Approach to Chemical BondingBond ParametersBonding in Homonuclear Diatomic MoleculesVSEPR TheoryApplications of Chemical BondingEquilibrium ProcessesHomogeneous EquilibriaFactors Affecting EquilibriaApplications of Equilibrium ConstantIonization of Acids and BasesIonic Equilibrium in SolutionEquilibrium in Chemical ProcessesSolubility Equilibria of Sparingly Soluble SaltsHeter Heterogeneous EquilibriaOxidation NumberClassification of Organic CompoundsIsomerismNomenclature of Organic CompoundsQuantitative AnalysisQualitative Analysis of Organic CompoundsOverviewStructural Representations of Organic CompoundsFundamental Concepts in Organic Reaction MechanismTetravalence of Carbon Shapes of Organic CompoundsMethods of Purification of Organic CompoundsClassificationAlkanesAlkenesAlkynesAromatic HydrocarbonCarcinogenicity and ToxicityAbnormal Molar MassColligative Properties and Molar MassSolubilityProteinsVitaminsCarbohydratesEnzymesHormonesNucleic AcidsElectrolytic Cells and ElectrolysisCorrosionGalvanic CellFuel CellsNernst EquationElectrochemical CellsBatteriesRate of ReactionIntegrated Rate EquationsCollision Theory of Chemical ReactionsTemperature Dependence of the Rate of a ReactionFactors Influencing Rate of a ReactionBonding in Metal CarbonylsDifference between Glucose and Fructose

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Yes, if you have PCM in my 12th grade, you can definitely apply to Chandigarh University's Industrial Design program. All you have to do is confirm that you fit the requirements for eligibility. A minimum of 50% in any stream an accredited board is required for admission to Chandigarh University's I

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Amrit

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Yes, you can appear for the 12th improvement exam even if you're currently pursuing a Polytechnic course, but it depends on a few key factors related to your board and eligibility.

You can give the improvement exam next year after passing 12th, but not if more than 2 years have passed.

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dev beni

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Yes, Chandigarh University considers your 12th-grade marks for admission to the Bachelor of Fine Arts (BFA) program. The university uses a merit screening process, which looks at your 12th marks along with your CUCET (Chandigarh University Common Entrance Test) score. To be eligible, you need at lea

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Zini Chanu

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Answered a week ago

Heyyy riya
Absolutely! Having a humanities background is no barrier to pursuing Fine Arts at Chandigarh University.

The programme welcomes students from all streams, including humanities, as long as they meet the minimum requirement of 50% marks in their 12th exams. Many humanities students find the

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Jas

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Answered a week ago

Yes you can.For most of the courses youare elligible as 50/55/60 in the minimum requirement.

 

Most of the courses admission is direct and some may required score like CUET, CMAT, University entrance.

 

Also you can explore about -

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Dinesh upadhyay

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Balwant Singh

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nupur

Beginner-Level 3

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Yes, you can still get admission in Chandigarh University for BBA even if you scored below 70% in 12th commerce. The basic eligibility is passing Class 12 with at least 50% marks from a recognised board. The university conducts its own entrance test CUCET, and performance in this exam along with you

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Vivek Kumar Yadav

Contributor-Level 9

Answered 2 weeks ago

Students can follow the below mentioned steps to check their CGBSE 12th result:

Visit the official website of the board @cgbse.nic.in

Click on the link that says "CGBSE 12th Result 2025"

Enter roll number and click on the "Submit" button

Your CG Board 12th result will be displayed.

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Md Shahzad

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Answered 3 weeks ago

To be eligible for CG PET admission, all students should have passed 12th standard (or equivalent) qualifying entrance examination with Maths, Physics and Chemistry. A minimum of 45% marks should have been scored in the exam (40% for reserved category).

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