The IAT 2025 notification has been released for admissions to BS-MS, BS, and BTech programs. The IISER Entrance Exam 2025 is scheduled to take place on May 25, 2025, at multiple exam centers nationwide. Candidates can register for the IISER Application Form 2025 starting from March 3, 2025, and must complete the fee payment within the specified timeline.

Candidates should carefully review the IAT 2025 eligibility criteria before completing the registration form to avoid disqualification at any stage of the IISER Entrance Exam 2025. This exam facilitates admissions to the five-year BS-MS dual degree and BS programs offered by IISER participating institutes, IIT Madras, and IISc Bangalore.

The exam authority will assess candidates’ domain knowledge and aptitude through multiple-choice questions (MCQs) based on the prescribed IISER syllabus 2025. Before taking the exam, applicants are advised to familiarise themselves with the IAT Exam Pattern 2025 to understand the marking scheme, shift timings, and negative marking.

For the 2025-2026 academic session, the IISER Entrance Exam 2025 will also facilitate admissions to the BTech program, which will be exclusively offered at IISER Bhopal.

What is the IISER Aptitude Test?

The Indian Institutes of Science Education and Research (IISERs) conduct the IISER Aptitude Test as an entrance exam for admission to their five-year BS-MS dual degree program. Based on their performance in the exam, candidates can secure admission to IISER campuses in Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, or Tirupati.

Students who have completed Class 12 in the Science stream are eligible to apply for the IISER Entrance Exam 2025. According to the exam pattern, the test consists of 60 objective-type questions that must be completed within a three-hour duration.

IISER 2025 Exam Highlights

The table below provides key details and tentative highlights of the IISER Aptitude Test 2025.

Note: The KVPY Channel and JEE Advanced Admission Channel/scorecard will no longer be valid for enrollment in the five-year BS-MS and BS dual degree programs offered by IISERs nationwide.

IISER 2025 Exam Dates

Below is the timetable for IISER 2025 for candidates to consult.

Upcoming Exam Dates

IISER 2025 Eligibility Criteria

IISER Entrance Exam 2025 Eligibility Criteria

To be eligible for the IAT 2025 exam for BS-MS program admissions, candidates must fulfill the following requirements:

IAT 2025 Eligibility Criteria: Nationality

Candidates must meet the following nationality requirements to apply for the IISER Entrance Exam:

• The candidate must be an Indian citizen.
• Candidates holding a Person of Indian Origin (PIO) status are also eligible. PIO refers to foreign citizens who have either held an Indian passport or have parents, grandparents, or great-grandparents born and permanently residing in India. The Government of India introduced the PIO Card Scheme in 1999 to facilitate their return to India.
• Candidates with Overseas Citizenship of India (OCI) status can also apply. OCI is an immigration status that grants foreign citizens of Indian origin the right to live and work in India indefinitely.

Note: OCI/PIO cardholders can apply for IAT 2025, provided they meet all other eligibility criteria. They will be eligible to compete for unreserved seats.

IAT 2025 Eligibility Criteria: Age Limit & Academic Qualifications

• Candidates must have passed Class XII (or equivalent) in 2022, 2023, or 2025 from a board recognised by the Council of Boards of School Education in India (COBSE).
• They must have studied at least three subjects from Biology, Chemistry, Mathematics, and Physics in their Class XII (or equivalent) examination.
• Minimum Marks Requirement:
  • Candidates from SC/ST/PwD categories must have scored at least 55% aggregate marks or an equivalent grade in their Class XII (or equivalent) examination.
  • Candidates from other categories must have secured a minimum of 60% aggregate marks or an equivalent grade.

Note: Students from the Jammu and Kashmir Board of School Education (JKBOSE), specifically from the Kashmir Division, Winter Zone areas of Jammu Division, and the Union Territory of Ladakh, who appeared for their Class XII (or equivalent) examination in December 2021, are also eligible to apply for IAT 2025, provided they meet all other eligibility requirements.

IISER 2025 Registration

Candidates can complete the IISER Entrance Exam 2025 application process online by following these steps:

Step 1: Register on the IISER Admission Portal

Candidates must first register on the IISER Admission 2025 portal at https://iiseradmission.in/. To sign up, they need to provide:

• Full name (as per the Class 12 mark sheet)
• A valid email ID
• A password

After signing up, a verification email will be sent to the registered email ID. Once verified, candidates can log in to their accounts and proceed to the next step.

Step 2: Fill Out the IISER Entrance Exam Application Form

Candidates must complete the IISER Entrance Exam 2025 application form online by providing:

• Personal Details: Name, date of birth, religion, category, disability status, guardian’s name, etc.
• Educational Information: Subject-wise Class 12 marks, board name, etc.
• Exam Center Preference: Selection of the preferred IISER exam center.
• Campus Preference: Choice of IISER campus for admission.
• Photo Upload: Upload a passport-size photograph (maximum size 2MB, format PNG/JPG/BMP).
• Float Option: Select Yes or No for the floating seat allocation option.

Step 3: Pay the IISER Entrance Exam Application Fee

Candidates must pay the IISER Entrance Exam 2025 application fee online through the secure payment gateway available on the portal.

Once the payment is successfully processed, candidates can log in to their accounts to download their application form. With this, the IISER Entrance Exam 2025 application process will be complete.

IISER 2025 Exam Pattern

The IISER Entrance Exam 2025 pattern is expected to remain consistent with the previous year’s format. The exam will be conducted as a computer-based test (CBT), and the subject knowledge of applicants will be assessed through multiple-choice questions (MCQs) based on the IISER 2025 syllabus.

A mock test link will soon be available for candidates to practice the exam format and familiarise themselves with the timing and structure of the test. The exam will consist of 60 multiple-choice questions (MCQs) drawn from the specified IISER syllabus 2025.

The marking scheme for the exam was revised last year. The main change made by the exam conducting body was the adjustment in marks awarded for each correct answer. Previously, the exam had a total of 180 marks, but the current maximum score for the examination is now 240 marks.

IISER Entrance Exam 2025 Highlights

IISER Entrance Exam 2025 Marking Scheme

The marking scheme for the IISER Entrance Exam 2025 is as detailed below:

Marking Scheme:

• +4 marks for each correct answer
• -1 mark for each incorrect answer

IISER 2025 Syllabus

The syllabus for the IISER 2025 exam will encompass topics from both Class 11th and 12th. It will include the following subjects:

• Mathematics
• Biology
• Physics
• Chemistry

Physics: The syllabus will cover concepts such as Work, Energy and Power, Gravitation, Properties of bulk matter, Physical World and Measurement, Kinematics, Laws of Motion, Thermodynamics, Oscillations, Waves, Electrostatics, Current Electricity, Electromagnetic Waves, Optics, Dual Nature of Radiation and Matter, Electromagnetic Induction, and Alternating Current.

Mathematics: Topics will include Permutations and Combinations, Binomial Theorem, Sets, Relations and Functions, Trigonometric Functions, Sequences and Series, Limits and Derivatives, Mathematical Reasoning, Continuity and Differentiability, Integrals, Applications of Integrals, Statistics, Probability, Matrices, Determinants, Differential Equations, Vectors, and Three-dimensional Geometry.

Biology: The syllabus will encompass Structural organisation in animals and plants, Diversity in the living world, Cell structure and function, Plant physiology, Human physiology, Biology and human welfare, Biotechnology and its application, Reproduction, Genetics, Evolution, Ecology, and Environment.

Chemistry: Topics will include Chemical Bonding and Molecular Structure, States of Matter, Some Basic Concepts of Chemistry, Structure of Atom, Thermodynamics, Redox Reactions, Hydrogen, Organic Chemistry, Hydrocarbons, Environmental Chemistry, The s-block Elements, The p-block Elements, The solid-state, Solutions, Electrochemistry, Chemical Kinetics, Organic compounds containing nitrogen, Biomolecules, Polymers, Chemistry in everyday life, Surface chemistry, and The d- & f-block elements.

IISER 2025 Admit Card

The IISER Admit Card 2025 will be available for download from May 15, 2025, on the official website. Registered candidates can download their admit card by entering their registration credentials. The admit card will contain essential details such as the candidate’s personal information, exam date and time, exam center address, as well as important guidelines and instructions for the exam day. It is a mandatory document to be presented at the exam center. The IISER Admit Card 2025 will only be available online, and candidates should retain it until the completion of the counseling or admission process.

Admissions are exclusively through the IAT 2025 Channel. The IAT 2025 Admit Card is a compulsory document for entry to the exam center and must be kept until the admission process concludes. The admit card will include information such as the IAT 2025 shift timings, candidate’s name, exam center details, and other relevant information.

IISER 2025 Result

The IAT 2025 results are expected to be announced in the fourth week of June 2025, as per the examination conducting body, IISER. Candidates can visit the official IISER website, iiseradmission.in, to download their IAT 2025 scorecard. Those selected in the IISER entrance exam will be required to upload the necessary documents to confirm their admission by the second week of July 2025. IISERs offer admission to the BS-MS Dual Degree and BS Degree programs (the latter only at IISER Bhopal). Admissions are granted exclusively through the IAT 2025 channel.

IISER Entrance Exam 2025 Answer Key

The IISER 2025 Entrance Exam Answer Key will be published on May 25, 2025, on the official website. The IAT 2025 Candidate Response Sheet is also expected to be released on the same day, following the successful completion of the exam. Candidates can visit the official website to download their response sheet and assess their performance in the IAT 2025 exam.

The IAT 2025 Provisional Answer Key will allow candidates to estimate their potential score in the entrance exam. If candidates identify any discrepancies, they can raise objections against the provisional answer key. The online objection window will be available soon.

Initially, the provisional answer key will be released, and candidates will have the opportunity to challenge it within the specified timeframe. After considering expert corrections, the final answer key for IAT 2025 will be issued before the announcement of the exam results.

IISER 2025 Counselling Process: Closing Ranks

The IISER 2025 Counselling Process will begin after the successful completion of the examination. Candidates who have appeared for the IAT 2025 and obtained their AIR or Category ranks must register for the IISER 2025 online counselling. The exact dates for the online registration will be announced by the exam authorities after the results are declared.

Following the registration process, the exam officials will release the IAT 2025 seat allotment list based on the candidates’ preferences and rankings.

IISER Cutoff