Free guide · NCERT Kaksha

CBSE 2026-27 me kya hata, aur NEET/JEE me usme se kya wapas aata hai

Board se hata hua topic hamesha safe-to-skip nahi hota. Neeche apna mode chuno, poori list turant filter ho jayegi.

0deleted/trimmed topics
track kiye

0"likely" gap mila
(Wave Optics, secondary-source)

0subjects — CBSE side
officially verified

Dono se hata — padhna zaroori nahi Board se hata, NEET/JEE me abhi bhi aata hai

Physics

Class 12 · 14 chapters

Chapter pe click karo, poori deleted-topics list khul jayegi. 2025-26 ki rationalisation 2026-27 me carry forward hui hai (cbseacademic.nic.in par verify kar sakte ho).

Paper-strip electroscope activity
Earthing ka concept
Charging by Induction

Capacitor me stored energy ki derivation

CBSE ki official list ke hisaab se: Meter Bridge hata nahi hai — ye abhi bhi CBSE ka listed Practical #3 hai ("meter bridge se resistance nikalna").
Sirf Potentiometer wala experiment (EMF comparison / internal resistance) CBSE ki official "List of Practicals" se hata hai — apparatus abhi bhi identification-list me hai, par koi numbered experiment nahi bacha.

Dhyaan do: Potentiometer/Meter Bridge dono practical-exam topics hain — JEE/NEET me koi practical paper hota hi nahi, isliye ye NEET/JEE ke liye gap nahi hai. Wheatstone bridge ka theory/numerical concept (jo current electricity ke theory syllabus me hai) sabhi jagah common hai.

Velocity Selector, Cyclotron, Toroid
Magnetic dipole moment of revolving electron

Bar magnet ka solenoid-jaisa mathematical treatment
Earth's Magnetism, Declination/Dip
Curie's Law aur temperature, Hysteresis

Energy Consideration (quantitative), Eddy Currents

Series LCR ka analytical solution
Sharpness of Resonance, LC Oscillations

Mirage, Diamond refraction, Rainbow, Scattering of Light

Doppler Effect
YDSE ki full derivation (official syllabus: "fringe width — no derivation, final expression only" — formula abhi bhi hai)
Resolving Power
Polarisation by Scattering/Reflection

Verified against official CBSE PDF (Aug 2026): Board theory syllabus me Wave Optics unit sirf "wavefront, Huygens' principle, YDSE + fringe-width formula (derivation nahi), single-slit diffraction (qualitative)" tak limited hai — Doppler, Resolving Power aur Polarisation is unit me kahin nahi likhe. Ye topics competitive exams me common tarike se poochhe jaate hain — exam se pehle official JEE/NEET syllabus khud dekh lena, isliye ise "likely gap" maano, "confirmed gap" nahi.

De Broglie wavelength ki derivation
Heisenberg Uncertainty
Davisson-Germer Experiment

Spectral Series
Bohr Model ki full derivation
Line Spectra

Radioactive Decay Law
Alpha/Beta/Gamma Decay
Nuclear Reactor

Ye chapter CBSE se poora hata diya gaya hai aur NEET ke NMC 2023-24 rationalisation me bhi hata diya gaya hai — dono jagah safe-to-skip.

Chemistry

Class 12

Official CBSE 2026-27 syllabus PDF se verify kiya — 10 numbered theory units (Solutions se Biomolecules tak) hi ab board-exam ke liye "summative" (marks wale) hain. Solid State poori tarah syllabus se bahar hai — kahin mention nahi. Baaki 4 topics niche table me hain, par inki asli status "poora hata" nahi hai — official document ki apni language yahi hai:

Official wording (verified, verbatim): "The following topics are included in the syllabus but will be assessed only formatively to reinforce understanding without adding to summative assessments... Schools can integrate these with existing chapters."

Topic	Board written exam (summative)	Practical exam
Solid State	Poori tarah syllabus se bahar (unit list me hai hi nahi)	—
Surface Chemistry	Formative only — theory exam me nahi poochha jayega	✅ Practical me abhi bhi hai (sol preparation experiment)
General Principles of Isolation of Elements	Formative only	—
Polymers	Formative only	—
Chemistry in Everyday Life	Formative only	—

Matlab: board ke written paper me sirf Solid State poori tarah safe-to-skip hai. Baaki 4 topics class me padhaye jaate hain, kabhi-kabhi practical me bhi aate hain — sirf theory board exam ke marks me nahi jodte. NEET/JEE se milaan secondary sources par based hai, isliye exam se pehle official syllabus zaroor dekh lena.

Mathematics

Class 12

Composition of functions, invertible functions ka formal treatment
Rolle's aur Lagrange's Mean Value Theorems (official 2026-27 syllabus me kahin mention nahi)

Official 2026-27 syllabus me exact wording hai: "Definition, range, domain, principal value branch. Graphs of inverse trigonometric functions." Graphs abhi bhi syllabus me hain, kuch nahi hata is chapter se.

Official syllabus me sirf ye hai: "Determinant of a square matrix (up to 3×3), minors, co-factors, applications in finding area of a triangle, Adjoint and inverse of a square matrix." Kisi standalone "Properties of Determinants" section ka explicit zikr nahi hai — matlab wo topic dedicated section ke roop me syllabus document me nahi likha.

Biology

Class 12

Dhyaan do: Purane NCERT chapter-numbers ab 2026-27 ke official syllabus se match nahi karte. Official document me Biology Class 12 ke chapters 1 se 13 tak renumber ho chuke hain (5 units: Reproduction, Genetics & Evolution, Biology & Human Welfare, Biotechnology, Ecology). "Reproduction in Organisms" naam ka koi chapter ab syllabus document me hai hi nahi — ye bahut purani baat hai, current confusion ka topic nahi.

Asli, verified deletion sirf ek hai:

Topic	Status (official PDF se verbatim)
Environmental Issues (air/water pollution, solid waste, greenhouse effect, ozone depletion, deforestation)	"Available as a part of CBSE Reading Material" — formative only, summative (marks wale) board exam me nahi poochha jayega. Chemistry jaisi hi category.

13 official chapters me se sirf yahi ek topic "formative-only" list me hai — baaki poora Biology syllabus (Reproduction, Genetics, Evolution, Human Health, Biotechnology, Ecosystem, Biodiversity) fully board-exam-tested hai.

Deleted-syllabus wala confusion khatam — ab padhai shuru karo

Jo syllabus bacha hai, usi ka chapter-wise handwritten mind-map notes NCERT Kaksha ke paas hai — Physics, Chemistry, Maths, Biology sabme.

PDF + Updates WhatsApp par Class 12 Notes Dekho →

Source: CBSE ki jaankari cbseacademic.nic.in ke official 2026-27 syllabus se li gayi hai (Aug 2026). NEET/JEE se milaan secondary sources par based hai, isliye jahan likha hai use "likely" maano aur exam se pehle neet.nta.nic.in ya jeemain.nta.nic.in par official syllabus zaroor dekh lena.