GATE XL & CY 2023: Exam Date, Registration, Eligibility and Exam Pattern

By Renuka Miglani|Updated : July 28th, 2022

IIT GATE XL & CY 2023: The Indian Institute of Technology (IIT), Kanpur, has released the GATE information brochure 2023 on its official website. Also, the authorities have released the exam dates for GATE XL & CY 2023 to select eligible candidates for Engineering/ Technology/ Architecture/ Science/ Commerce/ Arts. The aspiring candidates can start filling out the application form from 30 August onwards. Candidates will be able to complete the GATE 2023 application form by September 30 (Without a late fee).

The GATE 2023 exam is scheduled for February 4, 5, 11, and 12. Aspiring candidates willing to do MTech from IITs or other GATE participating institutions must apply online for the Graduate Aptitude Test in Engineering 2023. Candidates can check this article to get important information regarding the GATE JRF XL & CY exam


Table of Content

What is GATE XL & CY 2023?

The Graduate Aptitude Test in Engineering (GATE) is organized by the Indian Institute of Technology, Kanpur, and conducted jointly by the Indian Institute of Science (IISc) Bangalore and seven Indian Institutes of Technology (IIT) in Bombay, Delhi, Guwahati, Kanpur, Kharagpur, Madras, and Roorkee. The exam score is used by several government engineering/technology/architecture institutes to select students for masters and doctoral programs. The total number of subjects has been revised to 29 with two new topics: G.E. (Geomatics Engineering) and N.M. (Naval Architecture and Marine Engineering).

GATE XL & CY 2023 Information Brochure - Download PDF

GATE 2023 Life Sciences (XL) and Chemical Sciences (CY)

Life Science and Chemical Science students can also complete the application form and attempt the GATE 2023 exam. The subject code for Life Sciences and Chemical Sciences students are 'XL' and 'C.Y.'. While filling out the application form, Life Science and Chemical Science aspirants can select the 'XL' and 'C.Y.' subject codes to attempt the GATE 2023 exam.

  • The GATE 2023 Life Sciences (XL) program has three segments. The first segment is G.A. (General Skill), and the second is Chemistry, marked as the P segment required for students. The third Life Sciences segment (XL) consists of segments Q through U, and applicants must choose two.
  • This means there are six additional segments in the Life Sciences curriculum and the G.A. segment. Out of these six segments, the first is P which includes chemistry. The other five segments are Biochemistry (XL-Q), Botany (XL-R), Microbiology (XL-S), Zoology (XL-T), and Food Technology (XL-U). Of the five segments, candidates can select two.

Subjects with code:

XL-P - Chemistry
XL-Q - Biochemistry
XL-R - Botany
XL-S - Microbiology
XL-T - Zoology
XL-U - Food Technology

GATE XL & CY 2023 Highlights

Let's have a look at the major highlights of the GATE 2023 Exam mentioned below:

Exam NameGraduate Aptitude Test in Engineering (GATE 2023)
Short NameGATE
Conducting Institute (2023)IIT Kharagpur
Administered ByJointly by IISc Bangalore and Seven IITs
Mode of ExaminationOnline
Application ModeOffline / Online
Duration of Exam 180 Mins (3 Hours)
Frequency of ExaminationYearly
Application Fee (General)1500 Rs [Online]
Participating Colleges1060
Validity of certificate3 Years

GATE XL & CY 2023 Important Dates

Check all the important dates related to the GATE XL & CY 2023 Exam mentioned below:



GATE 2023 Registration Started

August 30, 2023 - September 30, 2023

GATE 2023 Registration Last Date

October 01, 2023 - October 07, 2023
GATE 2023 Application Correction Last DateNovember 11, 2023

GATE 2023 Admit Card Release Date

January 03, 2023

GATE 2023 Exam Date

04 Feb, 2023 - 05 Feb, 2023

GATE Result 2023 

March 16, 2023

GATE XL & CY 2023 Eligibility Criteria for 'XL' and 'CY'

Interested candidates must check the eligibility criteria before filling out the application form. Without meeting the eligibility criteria, the candidate cannot load the application form for GATE 2023. Eligibility criteria for XL and C.Y. subjects are mentioned below:

GATE JRF Educational Qualification:

Candidates who have already obtained a degree on the table can also take the GATE 2023 exam. But, first, check the eligibility criteria for the respective subject in the table below.

Qualifying Degree

Qualifying Degree / Examination


Year of Qualification not later than

B.E./ B.Tech./ B.Pharm.

Candidate must be a Bachelor in Engineering/Technology (4 years after 10+2 or 3 years after B.Sc./ Diploma in Engineering / Technology)

Qualified or in pre-final/final year



Candidate must have completed Bachelor of Architecture (5 years course)/Naval Architecture (4- year course) / Planning (4- year course)

Qualified or in pre-final/final year

2025 (for a 5-year program), 2024

(for the 4-year program


(Research)/ B.S.

Candidates need to have completed a Bachelor of Science degree (Post-Diploma/ 4 years after 10+2)

Qualified or in pre-final/final year


Pharm.D. (after 10+2)

Candidate must have completed 6 years program having internship or residency training during the sixth year as part of it

Qualified or in pre-final/final year


M.Sc./ M.A./ MCA or


Candidates need to have master's in Science, Mathematics, Statistics, Computer Applications, or equivalent

Qualified or in pre-final/final year


Int. M.E./ M.Tech.


Candidates should have done Post-BSc Integrated Master's degree in Engineering or Technology (4 years program)

Qualified or currently in 2nd/3rd /4th year

Any year

Int. M.E./

M.Tech. or Dual Degree (after Diploma or 10+2)

Candidates should have completed Integrated Master's degree program or Dual Degree in Engineering or Technology (5 years program)

Qualified or in pre-final/final year


Int. M.Sc./ Int. B.S.-M.S.

Candidates applying must have completed Integrated M.Sc. or 5 years integrated B.S.-M.S. program

Qualified or in pre-final/final year


Professional Society Examinations* (equivalent to B.E/ B.Tech/ B.Arch.)

Candidates need to have completed B.E./ B.Tech./ B.Arch. Equivalent examinations of Professional Societies, recognized by MHRD/UPSC/AICTE (e.g., AMIE by Institution of professional courses Engineers-India, AMICE by the Institute of Civil Engineers-India)

Completed Section A or equivalent professional course

Recognized Upto May 31, 2013,*

B.Sc. (Agriculture, Horticulture, Forestry)

4-years program2024


  • GATE 2023 applicants must be Indian citizens.
  • Candidates from other countries can apply for the GATE 2023 exam if they meet the stated eligibility criteria.

Age Criteria:

  •  The age limit is not there to take the GATE 2023 exam.
  • However, the validity of the scorecard will be three years.

GATE XL & CY Application Form 2023

The application form for the GATE 2023 exam will be available on the official website of IIT Kharagpur from August 30. Candidates can directly fill out the online form on the official website. The last date to fill out the application form is September 30, 2023. Check all the steps to fill the GATE 2023 application form mentioned below:

Step 1: Registration

Applicants must register via the GATE or GOAP online application processing system by entering their name, email I.D., and mobile number, after which a registration I.D. will be generated. Applicants must change their password to log in in the future. Save the registration number to complete the application form.

Step 2: Application Form

After completing registration, an application form will appear in which applicants must provide personal, academic, and qualifying information. In addition, applicants must choose the preferred exam centers listed below when completing the online application form.

Step 3: Uploading Images

Once the candidate has completed the application form, they must upload the scanned copy of the photograph, signature, and category certificate (if applicable) as specified by the examining authority.

Passport size photograph2 kb -200 kb
Signature (Should be in running handwriting)Two kb-150 kb
Category Certificate (if applicable)10 kb -300 kb
PwD Certificate (if applicable)10 kb – 300 kb

Step 4: Fee Payment

Applicants must pay the tuition fees listed below via bank/debit card/credit card.

Step 5: Final Submission

After completing all the above steps, applicants must submit the application form. Candidates will get the registration number through mail or registered mobile number. Print out the application form and save it for future reference.

GATE XL & CY 2023 Application Form Fees

Candidates need to pay the exam fee to complete the application form. Candidates from outside India can also apply for the GATE 2023 Exam. Check the application fee for centers in India and centers outside India mentioned below:

Exam Centers in India

CategoryApplication FeeDuring Extended Period
SC/ST/PwDRs. 750Rs. 1250
FemalesRs. 750Rs. 1250
GeneralRs. 1500Rs. 2000

GATE XL & CY 2023 Application Form Correction Fee

All applications submitted for the GATE 2023 exam will be screened for data accuracy. If an error is found in the application form, it will be opened for rectification. The following changes are allowed in specific areas. The details that can correct are:

  • Name of the candidate
  • Date of birth
  • Name of the Father
  • Country
  • Parents mobile number
  • Postal address
  • Details of the qualification title
  • PwD / dyslexia category / gender / status
For Candidates in IndiaFor Candidates outside India
ChangesFeeChanges Fee
Changes request in exam city in IndiaRs. 400Changes request in exam city outside IndiaRs. 740

GATE XL & CY 2023 Syllabus

Check the syllabus for the GATE 2023, which includes general aptitude, mathematics, biology, and other topics. 

General Aptitude

Verbal aptitude
Basic English grammar: Tenses, articles, adjectives, prepositions, conjunctions, verb-noun agreement, and other parts of speech
Basic vocabulary: Words, idioms, and phrases in context
Reading and comprehension
Narrative sequencing
Quantitative aptitude
Data interpretation: Data graphs (bar graphs, pie charts, and other graphs representing data), 2- and 3-dimensional plots, maps, and tables
Numerical computation and estimation: Ratios, percentages, powers, exponents and logarithms, permutations and combinations, and series
Mensuration and Geometry
Elementary statistics and probability
Analytical aptitude
Logic: Deduction and induction
Numerical relations and reasoning
Spatial aptitude
Transformation of shapes: Translation, rotation, scaling, mirroring, assembling, and grouping, paper folding, cutting, and patterns in 2 and 3 dimensions

Engineering Mathematics

Linear algebra
Matrices and determinants; systems of linear equations; Eigen values and eigenvectors
Limits, continuity, and differentiability; partial derivatives, maxima, and minima; sequences and series; test for convergence
Differential equations
Linear and nonlinear first order ODEs, higher order ODEs with constant coefficients; Cauchy's and Euler's equations; Laplace transforms.
Probability and Statistics
Mean, median, mode, and standard deviation; random variables; Poisson, average, and binomial distributions; correlation and regression analysis.
Numerical methods
Solution of linear and nonlinear algebraic equations; integration by trapezoidal and Simpson's rule; single-step method for differential equations

General Biology

Biomolecules-structure and function; biological membranes-structure, membrane channels, and pumps, molecular motors, action potential, and transport processes; basic concepts and regulation of the metabolism of carbohydrates, lipids
Amino acids and nucleic acids; photosynthesis, respiration, and electron transport chain
Enzymes-classification, catalytic, and regulatory strategies; enzyme kinetics-Michaelis-Menten equation; enzyme inhibition-competitive, non-competitive, and uncompetitive inhibition
Bacterial classification and diversity; microbial ecology-microbes in marine, freshwater, and terrestrial ecosystems; microbial interactions; viruses structure and classification; methods in microbiology; microbial growth and nutrition; nitrogen fixation
Microbial diseases and host-pathogen interactions; antibiotics and antimicrobial resistance
Innate and adaptive immunity, humoral and cell-mediated immunity; antibody structure and function; molecular basis of antibody diversity; T cell and B cell development; antigen-antibody reaction; complement; primary and secondary lymphoid organs.
Major histocompatibility complex (MHC); antigen processing and presentation; polyclonal and monoclonal antibody; regulation of immune response; immune tolerance; hypersensitivity; autoimmunity; graft versus host reaction; immunization and vaccines

Genetics, cellular, and molecular biology

Genetics and evolutionary biology
Mendelian inheritance; gene interaction; complementation; linkage, recombination, and chromosome mapping; extrachromosomal inheritance; microbial genetics-transformation, transduction, and conjugation; horizontal gene transfer and transposable elements
Chromosomal variation; genetic disorders; population genetics; epigenetics; selection and inheritance; adaptive and neutral evolution; genetic drift; species and speciation
Cell Biology
Prokaryotic and eukaryotic cell structure; cell cycle and cell growth control; cell-cell communication; cell signaling and signal transduction; post-translational modifications; protein trafficking; cell death and autophagy; extra-cellular matrix
Molecular biology
Molecular structure of genes and chromosomes; mutations and mutagenesis; regulation of gene expression; nucleic acid-replication, transcription, splicing, translation, and their regulatory mechanisms; Non-coding and micro RNA; RNA interference
DNA damage and repair

Fundamentals of biological engineering

Engineering principles are applied to biological systems.
 Material and energy balances for reactive and non-reactive systems; recycle, bypass and purge processes; stoichiometry of growth and product formation; degree of reduction, electron balance, and theoretical oxygen demand.
Classical thermodynamics and bioenergetics
Laws of thermodynamics; solution thermodynamics; phase equilibrium, reaction equilibrium; ligand binding; membrane potential; energetics of metabolic pathways, oxidation, and reduction reactions
Transport processes
Newtonian and non-Newtonian fluids, fluid flow-laminar and turbulent; mixing in bioreactors, mixing time; molecular diffusion and film theory; oxygen transfer and uptake in the bioreactor, kLa and its measurement; conductive and convective heat transfer, LMTD
Overall heat transfer coefficient; heat exchangers

Bioprocess engineering and process biotechnology

Bioreaction engineering
Rate law, zero, and first-order kinetics; ideal reactors-batch, mixed flow, and plug flow; enzyme immobilization, diffusion effects-Thiele modulus, effectiveness factor, Damkohler number; kinetics of cell growth
Substrate utilization and product formation; structured and unstructured models; batch, fed-batch, and continuous processes; microbial and enzyme reactors; optimization and scale up
Upstream and downstream processing
Media formulation and optimization; sterilization of air and media; filtration-membrane filtration, ultrafiltration; centrifugation-high speed and ultra; cell disruption; principles of chromatography-ion exchange, gel filtration, hydrophobic interaction
Affinity, G.C., HPLC, and FPLC; extraction, adsorption, and drying
Instrumentation and process control
 Pressure, temperature, and flow measurement devices; valves; first order and second order systems; feedback and feed-forward control; types of controllers-proportional, derivative, and integral control, tuning of controllers

Plant, animal, and microbial biotechnology

Totipotency; regeneration of plants; plant growth regulators and elicitors; tissue culture and cell suspension culture system-methodology, the kinetics of growth and nutrient optimization; production of secondary metabolites; hairy root culture
Plant products of industrial importance; artificial seeds; somaclonal variation; protoplast, protoplast fusion-somatic hybrid and cybrid; transgenic plants-direct and indirect methods of gene transfer techniques; selection marker and reporter gene
Plastid transformation
Culture media composition and growth conditions; animal cell and tissue preservation; Anchorage and non-anchorage dependent cell culture; kinetics of cell growth; Micro and macro-carrier culture; hybridoma technology; stem cell technology; animal cloning
Transgenic animals; knock-out and knock-in animals
Production of biomass and primary/ secondary metabolites-biofuels, bioplastics, industrial enzymes, antibiotics; large-scale production and purification of recombinant proteins and metabolites; clinical-, food-, and industrial microbiology
Screening strategies for new products

Recombinant DNA technology and other tools in biotechnology

Recombinant DNA technology
Restriction and modification enzymes; vectors-plasmids, bacteriophage, and other viral vectors, cosmids, Ti plasmid, bacterial and yeast artificial chromosomes; expression vectors; cDNA and genomic DNA library; gene isolation and cloning
Strategies for production of recombinant proteins; transposons, and gene targeting
Molecular tools
Polymerase chain reaction; DNA/ RNA labeling and sequencing; southern and northern blotting; in-situ hybridization; DNA fingerprinting, RAPD, RFLP; site-directed mutagenesis; gene transfer technologies; CRISPR-cas; biosensing and biosensors
Analytical tools
Principles of microscopy-light, electron, fluorescent, and confocal; principles of spectroscopy-UV, visible, CD, I.R., fluorescence, FT-IR, MS, NMR; electrophoresis; micro-arrays; enzymatic assays; immunoassays-ELISA, RIA, immunohistochemistry
Immunoblotting; flow cytometry; whole genome and ChIP sequencing
Computational tools
Bioinformatics resources and search tools; sequence and structure databases; sequence analysis-sequence file formats, scoring matrices, alignment, phylogeny; genomics, proteomics, metabolomics; gene prediction; functional annotation
Secondary structure and 3D structure prediction; knowledge discovery in biochemical databases; metagenomics; metabolic engineering and systems biology

GATE XL & CY 2023 Exam Pattern

The GATE 2023 exam will be conducted online (a computer-based test). A total of 65 questions will be asked on the GATE online test for 100 marks. The total time allotted for this exam is 3 hours. In addition, candidates can view the entrance exam pattern mentioned below.

Exam Mode: Online Computer Test (CBT)

Question type: multiple-choice questions (MCQ), multiple-select questions (MSQ), and Numerical answer type (NAT) questions.

Duration of the exam: 3 hours.

Maximum marks: 100 points.

The number of questions: 65 questions.

  • General Aptitude (G.A.)+
  • Candidate Selected Subject
Questions Type
  • Multiple Choice Questions (MCQs)
  • Multiple Select Questions (MSQ)
  • Numerical Answer Type (NAT) Questions
Questions Design
  • Application
  • Analysis and synthesis
  • Comprehension
  • Recall
Number of Questions10 (GA) + 55 (subject) = 65 Questions
Distribution of Questions in C.Y., XLQuestions from Subject Concerned – 85 Marks General Aptitude – 15 Marks
Total Marks100 Marks
Marking SchemeAll of the questions will be worth 1 or 2 marks


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  • The application process for GATE XL & CY 2023 exam is available from August 30 to September 30, 2022. Candidates can fill out the application online only. Check details of GATE JRF for more clarity.

  • The GATE XL & CY 2022 being organized by the Indian Institute of Technology Kanpur. The exam will be conducted by IISc Bangalore and seven IITs (IIT Bombay, IIT Delhi, IIT Guwahati, IIT Kanpur, IIT Kharagpur, IIT Madras, IIT Roorkee), on behalf of the National Coordination Board – GATE, Department of Higher Education, Ministry of Education (MoE), Government of India (GoI).

  • Yes, the GATE XL & CY syllabus has been released by the IIT Kharagpur on the official website. Check the GATE JRF Syllabus for XL & CY here.

  • No, the GATE Exam is conducted only once a year. CSIR uses gate score to distance GATE Junior Research Fellowship amount.

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