Quick answer: GATE CY 2027 has 65 questions for 100 marks in 3 hours: General Aptitude carries 15 marks and the Chemistry syllabus carries 85 marks. There is no separate Engineering Mathematics section. The exam is a Computer Based Test conducted by IIT Madras on 6 to 21 February 2027. MCQs carry negative marking (1/3 or 2/3); MSQ and NAT questions do not. Below is the complete, official GATE CY 2027 syllabus with the section-wise structure, GATE 2026 cutoffs and a preparation plan.
📋 Table of Contents
- GATE CY 2027 overview
- Exam pattern and marks distribution
- Question types and marking scheme
- GATE CY 2027 syllabus (official)
- General Aptitude syllabus
- GATE 2026 cutoff and statistics
- Allowed second papers
- Important dates and eligibility
- Preparation strategy
- What a GATE CY score gets you
- GATE CY course, notes and test series
- FAQs
GATE Chemistry (CY) 2027: Overview
GATE Chemistry (CY) is the route to PhD and integrated research programmes in chemistry at IITs, IISc and national labs, and to M.Tech programmes in related areas. Its syllabus is organised into Physical, Inorganic and Organic Chemistry, at the depth of a good M.Sc. programme.
Who usually takes this paper: M.Sc. Chemistry students (first year or higher) and graduates, and B.Sc. Chemistry students in the third year or higher.
| Particular | Details |
|---|---|
| Exam name | GATE 2027: Chemistry |
| Paper code | CY |
| Organising institute | IIT Madras |
| Mode | Computer Based Test (CBT), English only |
| Exam dates | 6, 7, 13, 14, 20 and 21 February 2027 (two sessions a day) |
| Duration | 3 hours (4 hours with compensatory time for eligible PwD candidates) |
| Questions / marks | 65 questions / 100 marks |
| Question types | MCQ, MSQ, NAT |
| Calculator | On-screen virtual scientific calculator only |
| Result date | 19 March 2027 |
| Score validity | 3 years |
| Official website | gate2027.iitm.ac.in |
GATE CY 2027 Exam Pattern and Marks Distribution
GATE CY 2027 has 65 questions for 100 marks in 3 hours: General Aptitude carries 15 marks and the Chemistry syllabus carries 85 marks. There is no separate Engineering Mathematics section.
| Section | Questions | Marks | Notes |
|---|---|---|---|
| General Aptitude (GA) | 10 | 15 | 5 × 1 mark + 5 × 2 marks |
| Chemistry (subject) | 55 | 85 | No separate Engineering Mathematics section |
| Total | 65 | 100 | 3 hours, CBT |
Question Types and Marking Scheme
| Question type | What it is | Marks | Negative marking |
|---|---|---|---|
| MCQ | Four options, exactly one correct | 1 or 2 | −1/3 for a 1-mark MCQ, −2/3 for a 2-mark MCQ |
| MSQ | Four options, one or more correct; full marks only for the exact correct combination | 1 or 2 | None (and no partial marks) |
| NAT | Numerical answer typed on a virtual keypad (integer or decimal) | 1 or 2 | None (and no partial marks) |
GATE questions test four abilities: Recall, Comprehension, Application, and Analysis and Synthesis. For NAT answers, round off only at the final step, to the number of decimal places asked in the question.
GATE CY 2027 Syllabus (Official, IIT Madras)
The GATE 2027 syllabus has been revised for most papers, so use this version rather than older lists. Here is the section-wise summary of the GATE CY 2027 syllabus, followed by the complete official topic list as published in Appendix D of the GATE 2027 Information Brochure.
| # | Section |
|---|---|
| 1 | Physical Chemistry |
| 2 | Inorganic Chemistry |
| 3 | Organic Chemistry |
Complete GATE CY 2027 syllabus: topic-wise
Section 1: Physical Chemistry
Structure: Postulates of quantum mechanics. Operators. Commutation relations and expectations values; the role of the wave function and its absolute squares, time dependent and time independent Schrödinger equations. Born interpretation. Dirac bra-ket notation. Examples of model solvable quantum mechanical systems.
Particle in a Box: Solutions and interpretations for finite length and infinite potential barrier; concept of tunnelling; particle in 1D, 2D and 3D-boxes; applications.
Harmonic Oscillator: Exact solutions of wave functions, properties of Hermite polynomials. eigenvalues in one dimension. Calculation of expectation values for potential and kinetic energy, harmonic and anharmonic potentials.
Rotational Motion: Angular momentum operators (orbital and spin), spherical harmonics and their properties.
Hydrogen and Hydrogen-like Atoms: Atomic orbitals; radial and angular distribution functions and their probabilities; Atomic units, Multi-electron atoms: Orbital approximation; electron spin; Pauli exclusion principle; Slater determinants. Variational method and secular determinants; first order non-degenerate perturbation techniques.
Molecular Structure and Chemical Bonding: Born-Oppenheimer approximation; Valence bond theory treatment for hydrogen molecule and linear combination of atomic orbitals – molecular orbitals (LCAO-MO) theory. Concept of hybridization and hybrid orbitals. Applications of LCAO-MO theory to H2+, H2; Molecular orbital theory (MOT) of homo- and heteronuclear diatomic molecules. Hückel theory, applications to simple molecules, small conjugated π-electron systems.
Group Theory: Symmetry elements and symmetry operations. Basic postulates of groups and group multiplication tables. Classes, reducible and irreducible representations of symmetry elements. Classification and labelling of molecular point groups. Symmetry based selection rules and their application to electronic and vibrational spectroscopy. Internal coordinates and symmetry labelling of vibrational modes; symmetry adapted linear combination of atomic orbitals (LCAO-MO); construction of hybrid orbitals using molecular point group symmetry.
Spectroscopy: Atomic spectroscopy; Russell-Saunders coupling; Term symbols and spectral details; origin of selection rules. Rotational, Vibrational, Electronic and Raman spectroscopy of diatomic and simple polyatomic molecules. Line broadening and line widths; simple properties of Gaussian and Lorentzian line shapes.
Molecular spectroscopy: Absorbance, Beer- Lambert’s law, Einstein’s coefficient, Jablonski diagram. Relationship of transition moment integral with molar extinction coefficient and oscillator strength. Basic principles of Nuclear Magnetic Resonance: Gyromagnetic ratio; Chemical shift, nuclear coupling.
Equilibrium: Laws of thermodynamics. Standard states. Thermochemistry. Thermodynamic functions and their relationships: Gibbs-Helmholtz and Maxwell relations, Gibbs-Duhem equation, Van’t Hoff equation. Criteria of spontaneity and equilibrium. Absolute entropy. Partial molar quantities. Thermodynamics of mixing. Chemical potential. Fugacity, Activity and Activity coefficient. Chemical equilibria. Dependence of equilibrium constant on temperature and pressure.
Solutions: Ideal and non-ideal solutions, Raoult’s Law and Henry’s Law.
Electrochemistry: Standard electrode potential and electrochemical cells. Nernst Equation and its application, relationship between electrode potential and thermodynamic quantities, Potentiometric and conductometric titrations. Ionic mobility and conductivity. Kohlrausch’s law, Debye-Hückel limiting law. Debye-Hückel-Onsager equation.
Phase Equilibria: Phase rule. Clausius- Clapeyron equation. Phase diagram of one component system: CO2, H2O, S; two component systems: liquid-vapor, liquid-liquid and solid-liquid systems. Fractional distillation. Azeotropes and Eutectics.
Statistical Thermodynamics: Micro-canonical, Canonical and Grand canonical ensembles, Boltzmann distribution, Partition functions and thermodynamic properties. Statistical mechanics of non-interacting systems, ideal monoatomic, diatomic gases, translational, rotational, vibrational and electronic partition functions.
Kinetics and Reaction Dynamics: Elementary, parallel, opposing, and consecutive reactions. Steady state approximation. Mechanism of complex reactions. Unimolecular reactions. Potential energy surface and classical trajectories, Concept of saddle points, Transition state theory: Eyring equation, thermodynamic aspects. Kinetics of polymerization. Catalysis concepts and enzyme catalysis. Kinetic isotope effects. Fast reaction kinetics: relaxation and flow methods. Diffusion controlled reactions. Kinetics of unimolecular and bimolecular photophysical processes, Quantum yield calculation, static and dynamic quenching.
Surfaces and Interfaces: Physisorption and chemisorption. Langmuir, Freundlich and Brunauer-Emmett-Teller (BET) isotherms. Surface catalysis: Langmuir-Hinshelwood mechanism. Surface tension, viscosity, Self-assembly/ physical chemistry of colloids, micelles and macromolecules.
Section 2: Inorganic Chemistry
Main Group Elements: Shapes and structures of molecules using VSEPR postulates, Hydrides, halides, oxides, oxoacids, nitrides, sulfides – shapes and reactivity. Structure and bonding of boranes, carboranes, silicones, silicates, boron nitride, borazine and phosphazenes: electron counting in polyhedral boranes, isolobal analogy. Allotropes of carbon, phosphorus and sulfur. Industrial synthesis of compounds of main group elements such as NH3, H2SO4 and HNO3. Chemistry of noble gases and interhalogen compounds. Acid-base concepts and principles (Lewis, Brønsted, HSAB and acid-base catalysis).
Transition Metals: Coordination chemistry – structure and isomerism, theories of bonding (VBT, CFT, and MOT). Metal-metal multiple bonds. Energy level diagrams in various crystal fields, CFSE, applications of CFT, Jahn-Teller distortion. Electronic spectra of transition metal complexes: spectroscopic term symbols, selection rules, Orgel and Tanabe-Sugano diagrams, nephelauxetic effect and Racah parameter, charge-transfer spectra. Magnetic properties of transition metal complexes. Ray-Dutt and Bailar twists, Reaction mechanisms: kinetic and thermodynamic stability, associative, dissociative substitution and redox reactions.
Lanthanides and Actinides: Recovery. Periodic properties, spectral and magnetic properties.
Organometallics: 18-Electron rule; metal-alkyl, metal-carbonyl, metal-olefin and metal-carbene complexes and metallocenes. Fluxionality in organometallic complexes. Types of organometallic reactions. Homogeneous catalysis – Hydrogenation, hydroformylation, methanol to acetic acid process, olefin metathesis and Wacker oxidation. Heterogeneous catalysis – Fischer-Tropsch reaction, Ziegler-Natta polymerization.
Bioinorganic Chemistry: Ion (Na+ and K+) transport, oxygen binding, transport and utilization, electron transfer reactions, nitrogen fixation, metalloenzymes containing magnesium, molybdenum, iron, cobalt, copper and zinc.
Solids: Crystal systems and lattices, Miller planes, crystal packing, crystal defects, Bragg’s law, ionic crystals, structure of AX, AX2, ABX3 type compounds, spinels, band theory, metals and semiconductors, Zeolites and their applications.
Instrumental Methods of Analysis: UV-visible, fluorescence and FT-IR spectrophotometry, NMR and ESR spectroscopy, mass spectrometry, atomic absorption spectroscopy, Mössbauer spectroscopy (Fe and Sn) and X-ray crystallography. Electroanalytical methods – cyclic voltammetry, ion-selective electrodes. Thermo-analytical methods: TGA, DTA and DSC.
Section 3: Organic Chemistry
General Concepts: Structure dependence on properties such as basicity and acidity. Role of aromatic stability on physical properties of organic compounds.
Stereochemistry: Chirality and symmetry of organic molecules with or without chiral centres and determination of their absolute configurations and optical purity. Relative stereochemistry in compounds having more than one stereogenic centre. Homotopic, enantiotopic and diastereotopic atoms, groups and faces. Conformational analysis of acyclic and cyclic compounds. Geometrical isomerism and optical isomerism. Configurational and conformational effects, atropisomerism, and neighbouring group participation on reactivity and selectivity/specificity. Stereoselective and stereospecific synthesis. Enantiomeric excess.
Reaction Mechanisms: Basic mechanistic concepts and energy profile diagrams – kinetics versus thermodynamic control, Hammond’s postulate and Curtin-Hammett principle. Methods of determining reaction mechanisms through kinetics, identification of products, intermediates and isotopic labelling. Solvent effects in substitution and elimination reactions. Linear free-energy relationship – Hammett and Taft equations.
Types of Reactions: Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic). Addition reactions to carbon-carbon and carbon-heteroatom (N and O) multiple bonds. Elimination reactions. Reactive intermediates – carbocation, carbanion, carbenes, nitrenes, arynes and free radicals. Molecular rearrangements. Barton decarboxylation and Barton-McCombie reaction, Hunsdiecker reaction.
Organic Synthesis: Synthesis, reactions, mechanisms and selectivity involving the following classes of compounds – alkenes, alkynes, arenes, alcohols, phenols, aldehydes, ketones, carboxylic acids, esters, nitriles, halides, nitro compounds, amines and amides. Uses of Mg, Li, Cu, B, Zn, P, S, Sn and Si based reagents in organic synthesis. Carbon-carbon bond formation through coupling reactions – Heck, Suzuki, Stille, Sonogashira, Negishi, Kumada, Hiyama, Tsuji-Trost reactions; olefin metathesis, McMurry coupling and Buchwald-Hartwig amination reactions. Baylis-Hillman, Henry, Ritter, Sakurai, Tebbe olefination, Pauson-Khand and Nazarov cyclization reactions. Concepts of multistep synthesis – retrosynthetic analysis, strategic disconnections, synthons and synthetic equivalents. Atom economy and green chemistry, Umpolung reactivity – formyl and acyl anion equivalents. Selectivity in organic synthesis – chemo-, regio- and stereoselectivity. Protection and deprotection of functional groups. Concepts of asymmetric synthesis – resolution (including enzymatic), desymmetrization and use of chiral auxiliaries, organocatalysis. Carbon-carbon and carbonheteroatom bond forming reactions through enolates (including boron enolates), enamines and silyl enol ethers. Stereoselective addition to C=O groups (Cram, Prelog and Felkin-Anh models). Asymmetric aldol reactions – Evans reaction and proline catalyzed reaction.
Oxidation: Oxidation of alcohols involving metal and non-metal-based (chromium, manganese, DMSO, and hypervalent iodine) reagents. Peracid oxidation of alkenes and carbonyls. Alkenes to diols (manganese and osmium-based reagents), alkenes to carbonyls with bond cleavage (ozonolysis), and alkenes to alcohols/carbonyls without bond cleavage (hydroboration-oxidation). Asymmetric epoxidations (Sharpless and Jacobsen) and Sharpless asymmetric hydroxylation.
Reduction: Catalytic homogeneous and heterogeneous hydrogenation. Metal based reductions using Li/Na in liquid ammonia, magnesium, zinc, titanium, and samarium. Hydride transfer reagents: NaBH4, L-selectride, K-selectride, Luche reduction, LiAlH4 and DIBAL-H.
Pericyclic Reactions and Photochemistry: Electrocyclic, cycloaddition and sigmatropic reactions. Diels-Alder reaction, Claisen and Cope rearrangements and their applications in organic synthesis. FMO method of analysis. Woodward-Hoffmann rules. Photochemistry of alkenes, arenes and carbonyl compounds. Photo-oxidation and photo-reduction. Di-π-methane rearrangements, Norrish type-I and II reactions. Paternό-Büchi reaction, Photo-Curtius and Wolff rearrangements. Barton and Hofmann-Lӧffler-Freytag reactions.
Heterocyclic Compounds: Nomenclature of mono- and bicyclic, as well as mono- and di-heteroatomic compounds, Structure, preparation, properties and reactions of furan, pyrrole, thiophene, pyridine, indole, quinoline and isoquinoline.
Biomolecules: Structure, properties and reactions of mono- and di-saccharides, physicochemical properties of amino acids, chemical synthesis of peptides, chemical structure determination of peptides and proteins, structural features of proteins, nucleic acids, lipids, steroids, terpenoids, carotenoids, and alkaloids.
Experimental Techniques in Organic Chemistry: Optical rotation (polarimetry). Application of various chromatographic techniques such as thin-layer, column, HPLC and GC. Applications of UV-visible, IR, NMR spectroscopy and Mass spectrometry in the structural determination of organic molecules.
General Aptitude (GA) Syllabus: 15 Marks, Common to All Papers
| Area | Topics |
|---|---|
| Verbal Aptitude | Basic English grammar, vocabulary (words, idioms, phrases in context), reading comprehension, narrative sequencing |
| Quantitative Aptitude | Data interpretation (graphs, charts, maps, tables), ratios, percentages, powers, exponents, logarithms, permutations and combinations, series, mensuration and geometry, elementary statistics and probability |
| Analytical Aptitude | Deduction and induction, analogy, numerical relations and reasoning |
| Spatial Aptitude | Translation, rotation, scaling, mirroring, assembling and grouping, paper folding, cutting and patterns in 2D and 3D |
GATE CY 2026 Cutoff, Qualifying Marks and Statistics
These are the official GATE 2026 figures for Chemistry from the GATE 2026 Statistical and Performance Report (IIT Guwahati). They are the best guide to what to expect in GATE CY 2027. Qualifying marks are out of 100; the qualifying GATE score for the general category is always 350.
| Paper | Registered | Appeared | Qualified | Qualified % |
|---|---|---|---|---|
| Chemistry (CY) | 30,775 | 22,457 | 2,203 | 9.8% |
| Paper | GEN | OBC-NCL / EWS | SC / ST / PwD |
|---|---|---|---|
| Chemistry (CY) | 25 | 22.5 | 16.6 |
| Paper | Highest marks | Mean of top 0.1% (or top 10) | Average marks | Std. deviation |
|---|---|---|---|---|
| Chemistry (CY) | 63 | 54.16 | 10.53 | 8.96 |
What this means for you: in GATE 2026 the average CY candidate scored 10.53 marks, while the top 0.1% averaged 54.16. Crossing the general qualifying mark of 25 puts you in the top 10% of candidates, but admissions to top IITs and PSU interview calls usually need a score far above the qualifying line.
How the qualifying marks and GATE score are calculated
For each paper, the general-category qualifying mark is max(25, min(40, μ + σ)), where μ and σ are the mean and standard deviation of the marks of all candidates who appeared. OBC-NCL/EWS qualifying marks are 90% and SC/ST/PwD qualifying marks are about two-thirds of the general value.
Your GATE score (out of 1000) is computed as Score = 350 + 550 × (M − Mq) / (M̄t − Mq), where M is your marks (normalised marks for multi-session papers), Mq is the general qualifying mark and M̄t is the mean marks of the top 0.1% or top 10 candidates, whichever is larger. A score of 350 corresponds to the qualifying mark and 900 to the top-candidate average.
Which Papers Can Be Combined with GATE CY 2027?
You may appear in one or two GATE papers. As per the tentative list in the GATE 2027 brochure, the second paper allowed with CY as the primary paper is: Engineering Sciences (XE), Life Sciences (XL). The fee for two papers is twice that of one paper.
GATE 2027 Important Dates, Fee and Eligibility
| Event | Date |
|---|---|
| Registration (regular period) | 2 to 27 September 2026 (closed) |
| Extended period with late fee | Up to 12 October 2026 (closed) |
| Special window (late fee) | 15 October 2026, 10:30 AM to 16 October 2026, 10:29 AM (closed) |
| Exam city notification | 4 January 2027 |
| Admit card | To be announced on GOAPS |
| GATE 2027 exam | 6, 7, 13, 14, 20 and 21 February 2027 |
| Result | 19 March 2027 |
Application fee per paper (regular period): ₹1,000 for female, SC, ST and PwD candidates and ₹2,000 for all others; ₹1,500 and ₹2,500 respectively in the extended period and special window.
Eligibility: candidates in the third or higher year of any undergraduate degree, or who have completed a government-approved degree in Engineering, Technology, Architecture, Science, Commerce, Arts or Humanities, are eligible. M.B.B.S./B.D.S./B.V.Sc. students from the fifth semester and M.Sc./M.A./MCA students from the first year are also eligible. There is no age limit. All dates are as per the brochure and subject to change, so always confirm on the official website.
GATE CY 2027 Preparation Strategy
- Physical Chemistry has the widest syllabus (quantum chemistry, group theory, spectroscopy, thermodynamics, kinetics, electrochemistry). Its numericals are where toppers separate from the rest.
- Group theory and spectroscopy link all three branches. Point groups, selection rules and NMR basics are worth extra practice.
- Inorganic Chemistry rewards structured notes: coordination chemistry, crystal field theory, organometallics, main group and solid state.
- Organic Chemistry needs mechanism practice and reaction recall: name reactions, stereochemistry, pericyclic reactions and spectroscopic structure determination.
- CY was one of the toughest papers in 2026: the average was 10.53, the topper scored 63, and only 2,203 of 22,457 qualified. Accuracy matters more than volume here.
- Solve previous GATE papers (2007 to 2026 are available on the official website) section by section, then as timed full-length papers.
- Practise every numerical with the GATE virtual calculator, since no physical calculator is allowed.
- From December, take one full mock a week in the real interface and analyse every mistake, especially negatively marked MCQs.
What Can You Do with a GATE CY 2027 Score?
GATE CY is used for PhD and M.Tech admissions with MoE scholarships, and qualifying GATE is a minimum requirement for many government research fellowships in the chemical sciences.
Under MoE guidelines, admitting institutes give at least 70% weightage to GATE performance for M.Tech admissions with scholarship. Qualifying GATE does not by itself guarantee admission, a scholarship or a job; each institute and employer applies its own criteria.
GATE CY 2027 Course, Notes and Test Series
Get structured guidance for GATE Chemistry from Piyush Wairale (IIT Madras) on www.piyushwairale.com. Start with the section that is common to every paper, then build your subject preparation:
Best GATE Aptitude Test Series 2027
General Aptitude is 15 of your 100 marks in GATE CY. Topic-wise tests, full GA mocks in the real interface and solved PYQs from 2010 to 2026.
All GATE courses, notes and test series
Browse every GATE course, notes package and test series in the PiyushAI store.
GATE 2027 courses, notes and test series by Piyush Wairale (IIT Madras)
Free lessons on YouTube (@piyushwairaleiitm)
GATE CY 2027: Frequently Asked Questions
What is the GATE CY 2027 exam pattern?
GATE CY 2027 has 65 questions for 100 marks in 3 hours: General Aptitude carries 15 marks and the Chemistry syllabus carries 85 marks. There is no separate Engineering Mathematics section. Questions are MCQ, MSQ and NAT, and each carries 1 or 2 marks.
Is there negative marking in GATE CY 2027?
Yes, but only for MCQs. A wrong 1-mark MCQ costs 1/3 mark and a wrong 2-mark MCQ costs 2/3 mark. MSQ and NAT questions have no negative marking, and there is no partial marking for any question.
What was the GATE CY 2026 cutoff?
The GATE 2026 qualifying marks out of 100 were Chemistry (CY): 25 (GEN), 22.5 (OBC-NCL/EWS), 16.6 (SC/ST/PwD).
When is the GATE CY 2027 exam?
GATE 2027 will be held on 6, 7, 13, 14, 20 and 21 February 2027 in forenoon (9:30 AM to 12:30 PM) and afternoon (2:30 PM to 5:30 PM) sessions. The paper-wise schedule will be published on the official website, and results are scheduled for 19 March 2027.
Which IIT is conducting GATE 2027?
IIT Madras is the organising institute for GATE 2027. The official website is gate2027.iitm.ac.in.
Does GATE Chemistry have an Engineering Mathematics section?
No. In CY, General Aptitude carries 15 marks and the remaining 85 marks are entirely on the Chemistry syllabus.
Which second papers can I take with GATE CY 2027?
Chemistry (CY) can be combined with Engineering Sciences (XE) or Life Sciences (XL).
How long is the GATE CY 2027 score valid?
The GATE 2027 score is valid for three years from the date the results are announced.
Sources: GATE 2027 Information Brochure, IIT Madras (gate2027.iitm.ac.in); GATE 2026 Statistical and Performance Report, IIT Guwahati. Last updated 27 October 2026.
More GATE 2027 guides: GATE 2027 syllabus and exam pattern for all 30 papers | GATE General Aptitude 2027 | GATE AE 2027 | GATE AG 2027 | GATE AR 2027 | GATE BM 2027 | GATE BT 2027 | GATE CE 2027 | GATE CH 2027 | GATE CS 2027 | GATE DA 2027 | GATE EC 2027 | GATE EE 2027 | GATE ES 2027 | GATE EY 2027 | GATE GE 2027 | GATE GG 2027 | GATE IN 2027 | GATE MA 2027 | GATE ME 2027 | GATE MN 2027 | GATE MT 2027 | GATE NM 2027 | GATE PE 2027 | GATE PH 2027 | GATE PI 2027 | GATE RA 2027 | GATE ST 2027 | GATE XE 2027 | GATE XH 2027 | GATE XL 2027
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