So you've heard about NEST and you want to understand what this exam actually is, how it works, and whether it's the right thing to pursue. This guide covers everything — from the basics of the exam to the detailed syllabus, scoring method, fees, and some honest preparation advice. I've tried to keep it straightforward without overcomplicating things.
NEST stands for National Entrance Screening Test. It's the exam you need to crack if you want admission into the 5-year Integrated MSc program at either NISER (National Institute of Science Education and Research, Bhubaneswar) or UM-DAE CEBS (University of Mumbai – Department of Atomic Energy Centre for Excellence in Basic Sciences, Mumbai). Both these institutions are set up by the Department of Atomic Energy, Government of India, and they are genuinely excellent places for students who want to do serious science.
These aren't your regular colleges. The programs here are residential, the faculty are working researchers, and a large majority of graduates go on to do PhDs at top institutions in India and abroad. So if research in basic sciences is what you're actually interested in, NEST is worth putting real effort into.
| Detail | Information |
|---|---|
| Full Name | National Entrance Screening Test (NEST) |
| Conducted by | NISER Bhubaneswar & UM-DAE CEBS Mumbai (jointly) |
| Exam Mode | Online / Computer-Based Test (CBT) |
| When is it held | Usually in the first or second week of June every year |
| Duration | 3 hours |
| Total Marks | 240 |
| Total Questions | 80 (20 per subject) |
| Subjects | Biology, Chemistry, Mathematics, Physics |
| Language | Hindi and English (English is final if there's any mismatch) |
| Official Website | www.nestexam.in |
NEST follows a fairly predictable calendar each year, though the exact dates are decided and announced by the exam authority. Don't assume last year's dates will repeat exactly — always check the official website once the notification drops.
| Event | Approximate Timeframe |
|---|---|
| Application Form Opens | First week of January |
| Application Deadline | Around first week of April |
| Fee Payment Closes | A few days after the application deadline |
| Admit Card Available | Mid-May onwards |
| Exam Date | First or second week of June (afternoon, typically 2 PM to 5 PM) |
| Results / Merit List | Usually by late June |
Before anything else, check whether you're eligible. There are a few conditions and they're fairly simple.
First, you must have studied at least three of the four subjects — Biology, Chemistry, Mathematics, and Physics — in your Class XI and XII. You don't need all four, but at least three is mandatory.
Second, you should have either passed Class XII already (from the year of application or the two years before it), or be currently appearing for Class XII boards in the same year as the exam. Students writing their Class XII exams in the current year are eligible to sit for NEST — but they must meet the marks criteria by the time admission actually happens.
On the marks side, here's the requirement:
| Category | Minimum Aggregate in Class XII |
|---|---|
| General / Unreserved | 60% or equivalent grade |
| SC / ST / Divyangjan | 55% or equivalent grade |
If your board gives letter grades instead of percentages, you'll need a certificate from the board specifying the equivalent percentage. Without that, the admissions committee's decision is final.
One thing worth knowing — there is no age limit for NEST. And you don't need to attach any documents while applying. All certificate verification happens only at the time of actual admission.
The paper has four sections, one for each science subject. Every section has exactly 20 questions, all MCQ type with four options and only one correct answer. Each section carries 60 marks, making the total 240.
| Section | Subject | Questions | Marks per Section |
|---|---|---|---|
| 1 | Biology | 20 | 60 |
| 2 | Chemistry | 20 | 60 |
| 3 | Mathematics | 20 | 60 |
| 4 | Physics | 20 | 60 |
| Total | – | 80 | 240 |
| What you do | Marks |
|---|---|
| Mark the correct answer | +3 |
| Mark a wrong answer | −1 (negative marking) |
| Leave the question blank | 0 (no penalty) |
The negative marking is −1 for every wrong answer, so blind guessing isn't a good idea. If you can eliminate two options and are stuck between two, you might take the risk. But if you genuinely have no idea, leaving it blank is usually the smarter call.
Also — and this is something many students miss — you must attempt at least three sections to be considered for the merit list. If you only do two sections, your paper won't be scored at all. You can attempt all four, and your best three scores will be used. More on how this works below.
NEST doesn't just rank you by total marks. There's a system called SMAS — Section-wise Minimum Admissible Score — and understanding it properly can change how you approach preparation.
After the exam, the authorities look at the top 100 scores in each section separately and calculate their average. Then they take 20% of that average as the minimum score a general category candidate needs in that section. This cutoff is called SMAS, and it's different for every section because it depends on how well students actually performed that year.
So if the average of the top 100 Biology scores is 42, then the Biology SMAS for general category = 42 × 0.20 = 8.4 marks. For Chemistry it might be different. For Physics it might be different again. Each section has its own SMAS calculated independently.
The SMAS also varies by reservation category:
| Category | SMAS Applicable |
|---|---|
| Unreserved / General | 20% of average of top 100 scores in that section |
| OBC-NCL | 90% of the General SMAS |
| SC / ST | 50% of the General SMAS |
| Divyangjan under General | 95% of the General SMAS |
| Divyangjan under OBC | 85% of the General SMAS |
| Divyangjan under SC/ST | 45% of the General SMAS |
You need to score at or above the SMAS in at least three sections. Only sections where you meet or beat the SMAS are counted toward your total. If you meet SMAS in all four sections, only your best three scores are added together. If you meet SMAS in just two sections, no total score is assigned to you — you don't get ranked.
| Situation | What Happens |
|---|---|
| SMAS cleared in all 4 sections | Total = your best 3 section scores added up |
| SMAS cleared in exactly 3 sections | Total = those 3 section scores added up |
| SMAS cleared in only 2 or fewer sections | No total score — you don't appear on the merit list |
Once total scores are calculated, they're converted into percentiles. On top of SMAS, there's also a Minimum Admissible Percentile (MAP). Even if you've cleared SMAS in three sections, if your overall percentile is below MAP, you won't get a rank. The actual MAP value is announced along with results each year — it's not fixed in advance.
The system first looks at the sum of the two best section scores. If that's still equal, it looks at the single best section score. If still tied, both get the same provisional rank, and the tie is only broken at the counselling stage by comparing Class XII marks, and if needed, Class X marks.
| Category | NISER (Bhubaneswar) | UM-DAE CEBS (Mumbai) |
|---|---|---|
| Unreserved / General | 101 | 23 |
| UR-EWS | Not applicable | 06 |
| OBC-NCL | 54 | 15 |
| SC | 30 | 09 |
| ST | 15 | 04 |
| Divyangjan | 5% within every category | 5% within every category |
| J&K / Ladakh (supernumerary) | 02 | 02 |
| Total Intake | ~202 | ~59 |
So the combined seats across both places is roughly 260. That's a small number for a national-level exam, which is why even students with good boards results need to prepare seriously. The EWS reservation under UR-EWS is only at CEBS, not NISER. Seat numbers can change slightly between cycles — always check the brochure for your year.
| Who | Fee |
|---|---|
| Male candidates – General and OBC category | ₹1,400 |
| All female candidates (any category) | ₹700 |
| UR-EWS candidates | ₹700 |
| SC / ST / Divyangjan candidates | ₹700 |
Payment goes through the online gateway only — credit card, debit card, net banking, UPI all work. No demand draft, no offline mode. Fee amounts have remained consistent in recent years but can be revised, so verify on the official brochure when applying.
The whole thing is done online. You don't need to mail anything or visit any office at any point during the application process.
- Visit www.nestexam.in and register with your email and phone number to get login credentials
- Log in and fill the application form — your personal details, academic information, category
- Upload your passport-size photo and signature scan. Both should be under 80 KB and in .JPG or .JPEG format only — no PNG, no PDF
- Choose three exam centre cities in your order of preference
- Pay the application fee through the payment gateway
- Submit before the deadline. After submission, download your admit card once it's available (usually mid-May)
One thing to sort out before you start filling the form — have your scanned photo and signature ready. These need to be properly cropped and sized. If you start the application and the session times out while you're hunting for files, it creates unnecessary hassle.
A few things you must know before exam day so there are no surprises:
| Rule | What it means |
|---|---|
| Arrival time | Reach at least 60 minutes before the exam starts |
| Last entry | 30 minutes after exam start — no entry after that, no exceptions |
| Earliest exit | 2 hours after exam start (medical emergency is the only exception) |
| Must carry | Admit card + valid photo ID (school ID or any government-issued ID) |
| How to carry documents | In a transparent folder, sleeve or pouch only — no opaque bags |
| Calculators / log tables | Not allowed. A basic on-screen calculator is provided. |
| Mobile phones / smartwatches | Strictly not allowed inside the hall |
| Water bottle | Transparent bottle only — opaque bottles not permitted |
| Rough work | Blank pages are provided in the hall |
For Divyangjan candidates — you get one full extra hour (20 minutes per hour of exam) as compensatory time. If you need a scribe, you have to arrange one yourself following the government guidelines. The scribe's role is limited to reading questions and keying in your answers. They cannot suggest answers or explain anything.
Students admitted through NEST get financial support through the Department of Atomic Energy's DISHA scholarship program. It's not a loan — it's a direct scholarship.
| Benefit | Amount |
|---|---|
| Annual Scholarship | ₹60,000 per year |
| Summer Internship Grant | ₹20,000 per year (additional) |
Since both NISER and CEBS are residential campuses, having this scholarship makes the financial side of things quite manageable. Students selected by DST for the INSPIRE-SHE program are also endorsed for their scholarship by these institutes.
The syllabus is based on CBSE curriculum and NCERT textbooks for Classes XI and XII across all four subjects. Class X science concepts might also show up in some questions. You can download NCERT books for free at ncert.nic.in/textbook.php.
One thing to be clear about — the reference books mentioned in brochures are only suggestive. NCERT is the actual foundation. Don't skip it in favour of heavier reference books.
- Diversity of Living Organisms – biodiversity, classification, three domains of life, five kingdom classification, plant kingdom (algae to angiosperms), animal kingdom (non-chordates to chordates)
- Structural Organisation – morphology of flowering plants (root, stem, leaf, flower, fruit, seed), anatomy of dicots and monocots, organ systems of frog
- Cell: Structure and Function – cell theory, prokaryotic and eukaryotic cells, all organelles in detail, biomolecules (proteins, carbohydrates, lipids, nucleic acids), enzyme types and action, mitosis and meiosis
- Plant Physiology – photosynthesis (light reactions, Calvin cycle, C3 and C4 pathways, photorespiration), respiration (glycolysis, fermentation, TCA cycle, ETS), plant growth regulators (auxin, gibberellin, cytokinin, ethylene, ABA)
- Human Physiology – breathing and gas exchange, blood composition and circulation (cardiac cycle, ECG, blood groups, disorders), digestion and absorption, excretion (urine formation, osmoregulation), locomotion (muscle contraction, skeletal system), neural coordination, endocrine glands and hormones
- Reproduction – sexual reproduction in flowering plants (pollination, fertilisation, seed and fruit development), human reproduction (gametogenesis, menstrual cycle, embryo development), reproductive health (STDs, contraception, assisted reproductive technologies)
- Genetics and Evolution – Mendelian inheritance, chromosomal theory, sex determination, linkage and crossing over, genetic disorders (haemophilia, sickle cell anaemia, Down's syndrome), DNA as genetic material, DNA structure, replication, transcription, translation, lac operon, genome projects, DNA fingerprinting, biological evolution (Darwin, Hardy-Weinberg, adaptive radiation, human evolution)
- Biology and Human Welfare – common human diseases (malaria, dengue, typhoid, AIDS, cancer), immunity (active, passive, vaccines), microbes in food processing, sewage treatment and biogas production
- Biotechnology – recombinant DNA technology, restriction enzymes, vectors, Bt crops, gene therapy, transgenic animals, biosafety issues
- Ecology – population interactions (mutualism, predation, parasitism, competition), ecosystem components and energy flow, ecological pyramids, biodiversity (types, importance, threats, conservation, hotspots, Ramsar sites)
- Basic Concepts – laws of chemical combination, Dalton's theory, mole concept, stoichiometry, empirical and molecular formulae
- Atomic Structure – Thomson and Rutherford models, Bohr model, quantum numbers, shapes of orbitals, Aufbau/Pauli/Hund rules, electronic configuration
- Periodic Table – modern periodic law, periodic trends (atomic radii, ionisation enthalpy, electronegativity), s and p block properties
- Chemical Bonding – ionic and covalent bonding, Lewis structures, VSEPR theory, hybridisation, MOT for homonuclear diatomic molecules, hydrogen bonding
- Thermodynamics – system and surroundings, first and second laws, internal energy and enthalpy, Hess's law, Gibbs energy, spontaneity, gas laws
- Equilibrium – law of mass action, Le Chatelier's principle, ionic equilibrium, pH, buffer solutions, Henderson equation, solubility product, common ion effect
- Redox Reactions – oxidation numbers, balancing by oxidation number and half-reaction methods
- Organic Chemistry Basics – IUPAC nomenclature, purification methods, inductive effect, resonance, hyperconjugation, electrophiles and nucleophiles, reaction types
- Hydrocarbons – alkanes (free radical halogenation), alkenes (electrophilic addition, Markovnikov, peroxide effect), alkynes (acidic character), benzene (resonance, aromaticity, electrophilic substitution)
- Solutions – types of solutions, Raoult's law, colligative properties (vapour pressure lowering, boiling point elevation, freezing point depression, osmotic pressure), Van't Hoff factor
- Electrochemistry – EMF of cells, Nernst equation, Kohlrausch's law, electrolysis, fuel cells, corrosion, lead accumulator
- Chemical Kinetics – rate of reaction, order, molecularity, integrated rate laws (zero and first order), half-life, Arrhenius equation, activation energy, collision theory
- d and f Block Elements – transition metal properties, colour, magnetism, catalysis, K₂Cr₂O₇ and KMnO₄ chemistry, lanthanides and actinides
- Coordination Compounds – nomenclature, Werner's theory, VBT, CFT, isomerism
- Haloalkanes and Haloarenes – substitution reactions, optical rotation, environmental effects of DDT and freons
- Alcohols, Phenols and Ethers – preparation and properties of primary alcohols, acidic nature of phenol, dehydration mechanism
- Aldehydes, Ketones and Carboxylic Acids – nucleophilic addition, reactivity of alpha hydrogen, acidic nature of carboxylic acids
- Amines – classification, preparation, identification of primary/secondary/tertiary, diazonium salts
- Biomolecules – carbohydrates (monosaccharides, disaccharides, polysaccharides), proteins (structure levels, denaturation, enzymes), nucleic acids, vitamins
- Sets and Functions – set operations, Venn diagrams, relations, functions (all standard types), trigonometric functions (unit circle definition, identities, compound angle formulae, general solutions)
- Algebra – mathematical induction, complex numbers (Argand plane, polar form, fundamental theorem of algebra), linear inequalities, permutations and combinations, binomial theorem, sequences and series (AP, GP, special sums)
- Coordinate Geometry – straight lines (all forms, distance of a point from line), conic sections (parabola, ellipse, hyperbola — standard equations and properties, standard circle equation), 3D coordinates basics (distance formula, section formula)
- Calculus – limits of polynomial, rational, trigonometric, exponential and logarithmic functions, derivatives as rate of change, derivative rules (sum, product, quotient, chain rule), derivatives of polynomial and trig functions
- Statistics and Probability – mean deviation, variance, standard deviation for grouped and ungrouped data, axiomatic probability, compound events
- Relations and Functions – types of relations (reflexive, symmetric, transitive, equivalence), one-to-one and onto functions, inverse trigonometric functions (principal values, graphs)
- Algebra – matrices (types, operations, transpose, symmetric, skew-symmetric, inverse), determinants (up to 3×3, minors, cofactors, area of triangle), solving systems of linear equations using matrix inverse
- Calculus – continuity and differentiability (composite, implicit, parametric, logarithmic differentiation, second order derivatives), applications of derivatives (rate of change, increasing/decreasing functions, maxima and minima), integration (substitution, partial fractions, by parts, standard forms), definite integrals and their properties, area under curves, differential equations (order/degree, variable separable, homogeneous, linear first order)
- Vectors and 3D Geometry – vectors (types, addition, scalar and vector products, direction cosines), 3D geometry (equation of lines in Cartesian and vector form, skew lines, shortest distance, angle between lines)
- Linear Programming – graphical method, feasible region, optimal solutions, constraints
- Probability – conditional probability, multiplication theorem, independent events, total probability, Bayes' theorem
- Units and Measurements – SI units, dimensional analysis, significant figures
- Kinematics – motion in straight line (uniform and non-uniform, kinematic equations), motion in a plane (vectors, projectile motion, uniform circular motion)
- Laws of Motion – Newton's three laws, momentum, impulse, friction (static, kinetic, rolling), equilibrium, centripetal and centrifugal forces
- Work, Energy and Power – work-energy theorem, potential energy, conservative forces, elastic and inelastic collisions in 1D and 2D
- Rotational Motion – centre of mass, torque, angular momentum, conservation of angular momentum, moment of inertia for standard objects (ring, disc, sphere, rod)
- Gravitation – Kepler's laws, Newton's law of gravitation, acceleration due to gravity (variation with height and depth), gravitational potential energy, escape speed, orbital velocity and energy
- Properties of Solids – stress and strain, Hooke's law, Young's modulus, bulk modulus, shear modulus, Poisson's ratio, elastic energy
- Properties of Fluids – pressure in a fluid, Pascal's law, Bernoulli's theorem (Torricelli's theorem, dynamic lift), viscosity, Stokes' law, terminal velocity, surface tension, capillary rise
- Thermal Properties – thermal expansion, specific heat, calorimetry, latent heat, conduction, convection, radiation, Wien's law, Stefan's law, Newton's law of cooling
- Thermodynamics – zeroth and first laws, thermodynamic processes (isothermal, adiabatic, cyclic), second law, Carnot engine and efficiency
- Kinetic Theory – ideal gas equation, kinetic interpretation of temperature, rms speed, degrees of freedom, equipartition of energy, mean free path, Avogadro's number
- Oscillations – SHM (displacement, velocity, acceleration, energy), simple pendulum, spring-mass system, phase
- Waves – transverse and longitudinal waves, speed of a wave, superposition, standing waves in strings and pipes, fundamental mode and harmonics, beats
- Electrostatics – Coulomb's law, superposition, electric field and field lines, dipole, Gauss's theorem and applications, electric potential and potential energy, conductors, dielectrics, capacitors (series and parallel, with and without dielectric), energy stored
- Current Electricity – drift velocity and mobility, Ohm's law, V-I characteristics, resistivity and conductivity, temperature dependence, emf and internal resistance, Kirchhoff's rules, Wheatstone bridge
- Moving Charges and Magnetism – Biot-Savart law, Ampere's law (solenoid), force on moving charge, force on current-carrying conductor, torque on current loop, moving coil galvanometer
- Magnetism and Matter – bar magnet, Gauss's law in magnetism, magnetisation, para/dia/ferromagnetic materials, effect of temperature
- Electromagnetic Induction – Faraday's and Lenz's laws, self and mutual inductance
- Alternating Current – peak and RMS values, phasors, AC through R/L/C individually, LCR series circuit, resonance, power factor, wattless current, AC generator, transformer
- Electromagnetic Waves – displacement current, properties of EM waves, EM spectrum (radio, microwave, infrared, visible, UV, X-ray, gamma)
- Ray Optics – reflection (spherical mirrors, mirror formula), refraction (Snell's law, total internal reflection, optical fibre), refraction at spherical surfaces, lenses (lens formula, lens maker's formula, power, combination), refraction through a prism
- Wave Optics – Huygens' principle, reflection and refraction using wavefronts, Young's double slit experiment (interference), diffraction through a single slit
- Dual Nature of Radiation and Matter – photoelectric effect, Hertz and Lenard's observations, Einstein's photoelectric equation, de Broglie relation
- Atoms – alpha scattering, Rutherford model, Bohr model (radius and energy of orbits), hydrogen spectrum
- Nuclei – atomic mass and nuclear size, binding energy and mass defect, binding energy per nucleon vs mass number, nuclear fission and fusion
- Semiconductor Electronics – intrinsic and extrinsic semiconductors, p-n junction, diode characteristics (forward and reverse bias), diode as rectifier
Past papers are genuinely the best resource you can use for NEST. The difficulty and style of questions is unlike most other entrance exams — they're more conceptual, sometimes unexpected, and test whether you've actually understood something or just memorised it. Going through previous papers will also help you manage your time better during the actual exam.
NEST also uploads past papers on their official website at www.nestexam.in. Check the relevant tab there — they sometimes release answer keys too.
A lot of students ask this question and expect some clever shortcut. There isn't one. But there are some things that genuinely matter and some things that people waste time on.
The NEST syllabus is explicitly based on NCERT textbooks for Classes XI and XII. This isn't a formality — the questions actually come from NCERT concepts, examples, and in biology and chemistry, sometimes directly from the content. Students who treat NCERT as just one of many books and jump straight to reference books often find themselves struggling with questions that were right there in the NCERT chapters they skimmed through.
Read NCERT carefully for all four subjects. Understand the diagrams. Understand the derivations. For biology especially, the NCERT language itself matters. Once you've covered NCERT thoroughly, use reference books only to deepen your understanding in topics where you feel weak.
Since your best three section scores are counted, it's worth identifying early which three subjects you're genuinely strongest in and making sure those are very solid. A student who does well in Physics, Chemistry and Mathematics but is shaky in Biology can still score very well — as long as they've at least cleared the Biology SMAS so it doesn't knock them out of the scoring entirely.
Don't abandon your weakest subject completely though. Attempting it and getting a decent score gives you the option to drop your worst of the three main subjects if that section happened to go badly on exam day. The fourth subject is a safety net — use it as one.
This is where a lot of students get hurt. They focus hard on three subjects and almost ignore the fourth, then fall below the SMAS in that section and lose their rank entirely despite strong scores elsewhere. You don't need to top the fourth section — you just need to clear the minimum. Keep that in mind when deciding how to split your preparation time.
NEST is a computer-based test. Three hours of reading and solving problems on a monitor is different from doing it on paper. Your eyes tire differently, you scroll through questions differently, and the overall feel is different. Once the mock test link is available on nestexam.in, use it seriously — not just as a casual run-through, but as a proper timed practice session.
Students from coaching institutes sometimes find NEST questions oddly difficult despite scoring well in other exams. That's because coaching prepares you for question patterns, and NEST questions are often not patterned the same way. A student who genuinely understood a concept from their NCERT reading will usually handle these better than someone who's drilled a hundred similar questions but never really thought about the underlying principle. Deep understanding beats pattern memorisation here.
NEST conducts the exam at roughly 140 cities and towns spread across all states in India — including smaller towns, not just metros. When applying, you pick three cities in order of preference. The committee tries to allot your first choice but it's not guaranteed.
Whatever centre appears on your admit card is your final centre — regardless of your preference order. The committee also has the right to cancel or add centres without prior notice depending on how many candidates opt for each city. Don't assume anything until you see your admit card.
When the merit list is published on the NEST website, candidates with a rank become eligible for consideration in the admission process. But getting a rank doesn't automatically mean you'll be called for admission — the counselling process is conducted separately, and its schedule and details are put up on the website after results.
During counselling, you'll typically indicate your preference for institution (NISER or CEBS) and subject (Biology / Chemistry / Mathematics / Physics). Admission is confirmed only after all original certificates are verified. If any certificate doesn't match what was declared in the application, the offer gets cancelled.
One last thing worth knowing — the NEST committee reserves the right to relax any of the defined cutoffs in exceptional circumstances. So even in a year where a particular category has fewer candidates, they have the flexibility to adjust rather than leave seats vacant.
| How to reach | Details |
|---|---|
| Official Website | www.nestexam.in |
| nest-exam@niser.ac.in (recommended — faster response) | |
| Postal Address | Chief Coordinator NEST, NISER Bhubaneswar, At/PO: Jatni, Khurda, Odisha – 752050 |
| Anti-Ragging Helpline | 1800-180-5522 (toll-free, 24×7) |
This guide is based on the official NEST Information Brochure. Exact dates, fees and seat counts are decided fresh each year by the exam authority — always check www.nestexam.in for the current cycle's official details. Previous year paper links on this page will be updated as they are added.
