CUET UG 2026 Syllabus Update! Complete List of Deleted & Added Topics for Science Students

Aspiring CUET UG 2026 candidates, take note! The National Testing Agency (NTA) has released the updated syllabus for the 2026 session, and there are major surprises. While some subjects like Physics have seen significant reductions (bye-bye Radioactivity!), others like Chemistry and Biology have become much more specific, adding new detailed topics you must study.

If you are using last year’s study material, be careful—you might be studying deleted topics or missing out on new additions. We have analyzed the 2025 vs. 2026 syllabus in detail to give you a clear, exam-focused roadmap.

Key Changes You MUST Know for 2026:

• Physics: Radioactivity and Polarization are completely REMOVED.
• Chemistry: Not reduced, but Expanded! New topics like Henry’s Law and Metal Carbonyls added.
• Biology: Specific technologies like PCR, RNAi, and ICSI are now explicitly listed.
• Maths (Applied): Bond Valuation is added, while Growth & Decay models are dropped.

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Below is a comprehensive list of the topics that have been excluded and added for the CUET UG 2026 syllabus:

Physics (322)

For 2026, the Physics syllabus is lighter! Several theoretical topics have been removed to focus more on core concepts.

1. Deleted Topics in 2026 (Removed from syllabus)

• Unit 4 (AC Circuits): LC Oscillations (qualitative treatment) is removed.
• Unit 6 (Optics):
  • Scattering of light (Blue colour of sky, reddish sun) – DROPPED.
  • Polarisation (Plane polarised light) – DROPPED.
• Unit 8 (Atoms & Nuclei):
  • Radioactivity (Alpha, beta, gamma particles/rays and their properties) – COMPLETELY REMOVED.

2. Additions in 2026 (New Topics to Study)

• Unit 3 (Magnetism): Magnetization of materials and the effect of temperature on magnetic properties.
• Unit 4 (AC Circuits): Phasors and Power Factor are now explicitly added.
• Unit 6 (Optics): Width of central maxima (Diffraction).
• Unit 8 (Atoms & Nuclei): Nuclear Force and specific derivations for Bohr’s Model (Radius, Velocity, Energy).

Unit	Topic	Status	Details of Change
Unit 3: Magnetization	Magnetization & Temperature	✅ Added	The 2026 syllabus explicitly adds "Magnetization of materials" and the "effect of temperature on magnetic properties", which were not detailed in 2025.
Unit 4: AC Circuits	LC Oscillations	❌ Removed	The topic "LC oscillations (qualitative treatment only)" present in 2025 has been removed from the 2026 syllabus.
Unit 4: AC Circuits	Phasors & Power Factor	✅ Added	The terms "phasors" and "power factor" are explicitly listed in the 2026 syllabus, clarifying what needs to be studied under AC circuits.
Unit 6: Optics	Scattering of Light	❌ Removed	The topic covering the "blue colour of the sky and reddish appearance of the sun" has been completely removed for 2026.
Unit 6: Optics	Polarisation	❌ Removed	The entire section on "Polarisation, plane polarised light" has been deleted from the 2026 syllabus.
Unit 6: Optics	Diffraction	✅ Added	The specific topic "width of central maxima" has been added to the Diffraction section in 2026.
Unit 8: Atoms & Nuclei	Radioactivity	❌ Removed	A major reduction: "Radioactivity – alpha, beta and gamma particles/rays and their properties" is not in the 2026 syllabus.
Unit 8: Atoms & Nuclei	Nuclear Force	✅ Added	"Nuclear force" has been explicitly added to the syllabus for 2026.
Unit 8: Atoms & Nuclei	Bohr Model Derivations	⚠️ Modified	The 2026 syllabus specifically requires the "Expression for radius of an orbit, velocity and energy of electron in an orbit", whereas 2025 was more general.
Unit 9: Electronic Devices	Semiconductors	⚠️ Modified	The 2026 syllabus explicitly specifies "Intrinsic and extrinsic semiconductors, p-type and n-type", replacing the general "conductors, insulators and semiconductors" text of 2025.

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Chemistry (306)

Unlike Physics, Chemistry has not been reduced. Instead, it has become more detailed. The 2026 syllabus lists specific sub-topics that were general in 2025.

1. Major Additions for 2026

• Unit I (Solutions): Henry’s Law, Azeotropes, and Reverse Osmosis & Water Purification.
• Unit III (Kinetics): Pseudo first-order reactions and limitations of Collision Theory.
• Unit IV (d-Block): Standard electrode potential trends for M²⁺/M and M³⁺/M²⁺.
• Unit V (Coordination Compounds):
  • Spectrochemical Series.
  • Metal Carbonyls (Shape and Bonding).
• Unit VI (Haloalkanes): Specific stereochemical terms: Chirality, Retention, Inversion, Racemization.
• Unit X (Biomolecules): Mechanism of enzyme action and Deficiency diseases (Vitamins/Hormones).

2. Retained Topics

• Major units like Electrochemistry, p-Block (Group 15-18 remains excluded as per previous trends, check official PDF), and Organic Chemistry core reactions remain largely the same.

Unit	Topic	Status	Details of Change
Unit 1: Solutions	Henry’s Law	✅ Added	The 2026 syllabus explicitly adds "Henry’s Law", which was not listed in 2025.
Unit 1: Solutions	Azeotropes	✅ Added	"Ideal & Non-Ideal Solutions" and "Azeotropes (elementary idea)" are new additions for 2026.
Unit 1: Solutions	Water Purification	✅ Added	The topic "Reverse Osmosis & Water Purification" has been added.
Unit 3: Kinetics	Pseudo First Order	✅ Added	"Pseudo first order reactions" is explicitly listed in 2026, whereas 2025 only covered zero and first order generally.
Unit 4: d-Block	Standard Electrode Trends	✅ Added	The 2026 syllabus specifies learning "Standard electrode potential trends for M2+/M & M3+/M2+", which requires a deeper understanding of trends than 2025.
Unit 5: Coordination	Spectrochemical Series	✅ Added	A major addition: "Spectrochemical series" is now explicitly part of the syllabus.
Unit 5: Coordination	Metal Carbonyls	✅ Added	The "Shape and Bonding in metal carbonyls" is a new and specific topic added for 2026.
Unit 6: Haloalkanes	Stereochemistry Terms	⚠️ Detailed	The 2026 syllabus explicitly lists terms like "Chirality, retention, inversion, racemization", requiring specific definition knowledge compared to 2025's general "optical rotation".
Unit 10: Biomolecules	Enzyme Mechanism	✅ Added	"Mechanism of enzyme action (elementary idea)" is a new addition to the Proteins section.
Unit 10: Biomolecules	Deficiency Diseases	✅ Added	The 2026 syllabus explicitly requires knowing "Deficiency diseases" for both Vitamins and Hormones.

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Biology (304)

The 2026 syllabus is all about specifics. You need to know the exact names of experiments and technologies now.

1. New Specific Additions in 2026

• Unit VI (Reproduction): ICSI (Intracytoplasmic Sperm Injection) and IUI (Intrauterine Insemination).
• Unit VII (Genetics):
  • Pedigree Analysis.
  • Specific disorders: Sickle-cell anaemia and Phenylketonuria.
  • Named Experiments: Transforming Principle, Hershey-Chase, and Meselson-Stahl.
• Unit VII (Evolution): Miller’s Experiment.
• Unit IX (Biotechnology):
  • Tools: PCR (Polymerase Chain Reaction), Bioreactors.
  • Applications: RNA Interference (RNAi).
• Unit X (Ecology): Amensalism (population interaction).

2. Deleted/Modified

• General descriptions have been replaced with the specific technical terms listed above.

Unit	Topic	Status	Details of Change
Unit VI: Reproduction	ARTs (Infertility)	✅ Added	ICSI (Intracytoplasmic Sperm Injection) and IUI (Intrauterine Insemination) are explicitly added to the list of Assisted Reproductive Technologies.
Unit VII: Genetics	Mendelian Disorders	✅ Added	Sickle-cell anaemia and Phenylketonuria are now explicitly listed.
Unit VII: Genetics	Pedigree Analysis	✅ Added	The topic "Pedigree analysis" is explicitly added for 2026.
Unit VII: Genetics	Key Experiments	✅ Added	The 2026 syllabus specifically names: Transforming Principle, Hershey-Chase experiment, and Meselson and Stahl’s experiment.
Unit VII: Evolution	Miller’s Experiment	✅ Added	Miller’s experiment (Origin of Life) is explicitly listed for 2026.
Unit VIII: Health	Immunity Details	⚠️ Detailed	The 2026 syllabus breaks down immunity into Innate, Acquired, Active, Passive, and Auto-immunity, which was not detailed in 2025.
Unit IX: Biotech	Tools & Processes	✅ Added	Specific tools like PCR, Restriction Enzymes, Cloning Vectors, and Bioreactors are now explicitly in the syllabus.
Unit IX: Biotech	RNA Interference	✅ Added	RNA Interference (RNAi) is a major new addition to the Applications section.
Unit X: Ecology	Interactions	✅ Added	Amensalism and Commensalism are explicitly added to the population interactions list.
Unit X: Ecology	Conservation	✅ Added	New conservation terms: Cryopreservation, Wildlife safaris, and Ethical/Utilitarian approaches to conservation.

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Mathematics / Applied Mathematics (319)

Changes are mostly in Section B2 (Applied Mathematics). Section B1 (Core Math) remains stable.

1. Section B1 (Core Mathematics)

• No Major Changes: The syllabus for Matrices, Calculus, Vectors, and 3D Geometry is consistent with the 2025 session.

2. Section B2 (Applied Mathematics) - UPDATED

• Deleted Topics:
  • Calculus: Tangents and Normals.
  • Differential Equations: Growth and decay models.
  • Statistics: Two independent groups t-test (only one-sample t-test remains).
• Added Topics:
  • Financial Mathematics: Valuation of Bonds (Concept of bond, present value approach).

Unit	Topic	Status	Details of Change
Unit III: Calculus	Tangents & Normals	❌ Removed	The topic "Gradient of tangent and normal, equations of tangents and normal" has been removed from Application of Derivatives in 2026.
Unit III: Calculus	Higher Order Derivatives	⚠️ Limited	The 2026 syllabus explicitly limits this to "upto second order derivatives", whereas 2025 was more open-ended.
Unit III: Calculus	Definite Integrals	⚠️ Limited	The 2026 syllabus specifies finding the area under the curve for "(non-trigonometric function)", a clarification not present in 2025.
Unit III: Diff. Equations	Growth & Decay Models	❌ Removed	The entire section on "Application of Differential Equations: Growth and decay model" has been deleted for 2026.
Unit V: Time Based Data	Index Numbers	❌ Removed	The words "Index Numbers" have been removed from the Unit Title in 2026 (previously "Index Numbers and Time Based Data"), aligning with the content which focuses on Time Series.
Unit VI: Statistics	t-Test (Two Groups)	❌ Removed	The 2026 syllabus restricts the t-Test to "one sample t-test". The "two independent groups t-test" found in 2025 is gone.
Unit VII: Financial Math	Valuation of Bonds	✅ Added	A major addition: "Valuation of Bonds: Concept of bond and related terms, Value of bond using present value approach" is new for 2026.

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Summary of 2026 Syllabus Updates

Subject	Deleted Topics (Don't Study)	New Additions (Must Study)
Physics	Radioactivity, Polarization, Scattering of Light	Magnetization, Phasors, Nuclear Force
Chemistry	(None explicitly deleted compared to 2025)	Henry's Law, Metal Carbonyls, Enzyme Mechanisms
Biology	General descriptions	PCR, RNAi, Sickle-cell Anaemia, Pedigree Analysis
Maths (Applied)	Tangents/Normals, Growth/Decay Models	Valuation of Bonds

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CUET UG Science Syllabus 2026 PDF Link (UPDATED)
Subject	Syllabus PDF Link (Updated)
CUET UG Physics Syllabus 2026	Download PDF
CUET UG Chemistry Syllabus 2026	Download PDF
CUET UG Mathematics Syllabus 2026	Download PDF
CUET UG Biology Syllabus 2026	Download PDF

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