IISER Entrance Exam Previous Year Question Paper; Download 2024, 2023, 2022, 2021, 2020 Question Paper

Indian Institutes of Science Education and Research Entrance Exam 2026 ( IISER Entrance Exam )

Updated on Jan 20, 2026 15:25 IST
IISER Previous year question papers are an invaluable resource for students preparing for the IISER Aptitude Test 2026. These papers offer a unique insight into the exam's structure, question types, and difficulty level. By solving IAT PYQPs, candidates can familiarize themselves with the exam pattern, identify their strengths and weaknesses, and i

Students preparing for the IISER Aptitude Test 2026 can benefit immensely from the IISER previous year question papers. They will get to know about the exam's structure, question types, and difficulty level. Read this Shiksha article to check out the IAT last five-year question paper.

IAT Previous Year Question Paper

IAT Previous Year Question Paper

IAT previous year question papers are available here. Students can use the IISER previous year question paper to understand the exam structure, trends of questions asked in the exam, question patterns, and the marking scheme. Solving the previous year question paper of IISER will give you a real-time exam experience. Also, you will get to know the exam difficulty level and the weightage of the topics asked in the exam. IISER releases the IAT question paper online at official website.

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Table of contents
  • How Does the Previous Year Question Paper Help Prepare For IISER Exam 2026?
  • IISER Entrance Exam 2026 Question Paper PDF
  • IISER Previous Year Question Paper PDFs
  • IISER Entrance Exam 2026: Subject Weightage
  • IISER Entrance Exam Pattern 2026

How Does the Previous Year Question Paper Help Prepare For IISER Exam 2026?

IISER pyq are very helpful in preparing for an exam, and the IISER Aptitude Test (IAT) is no exception. Some advantages of revising with IAT pyq are stated below: 

Understanding of Exam Pattern: 
Solving IISER previous year questions provides the exam structure, including the number of questions, marks distribution, and types of questions. Students feel less anxious about the exam and enter the exam feeling confident.  
Evaluate Overall Difficulty of the Exam:
Studying with PYQs gives students an initial evaluation of exam difficulty and areas of concentration.
Determine Important Topics: 
IISER previous question helps isolate themes and important topics that come up in the exam and helps prioritize the areas of study to concentrate on frequently tested information. 
Evaluate Time Management: 
Practicing with PYQs will enable students to practice effective time management principles. Students will determine how to maximize their time and not linger on questions. 
Self-Evaluation & Analysis: 
It allows students to analyze strengths and weaknesses. Students will determine where they excel in study/review.

Also Read: IISER 2025 New Changes Introduced: Check for Newly Added Courses, Eligibility, Seat Intake Details 

IISER Entrance Exam 2026 Question Paper PDF

IISER Entrance Exam 2026 will be conducted in May 2026, tentatively at various exam centres across the nation. The memory-based question paper for IISER 2026 will be released after the exam is over. The question will be uploaded here.

Question Paper Medium IISER 2026 Question Paper PDF Download
English Available Soon
Hindi Available Soon

IISER Previous Year Question Paper PDFs

By solving the IISER previous year question papers, students can identify their strengths and weaknesses. Along with self-assessment, solving previous year question papers of IISER, one can learn time management, explore thinking capacity, and problem-solving skills. Students can check the IAT's last five years question papers given below

Year

Question Paper Medium- English

Question Paper Medium- Hindi
2024 Download Here Available Soon
2023 Download Here Download Now
2022 Download Here Download Now
2021 Download Here Download Now
2020 Download Here Available Soon
2019 Download Here Download Now
2018 Download Now Available Soon
2017 Download Now Download Now
Q:   How many sections are asked in the IISER Entrance Exam?
A:

The IISER Entrance Exam 2026 pattern is expected to remains same as last year. IAT consists of 60 questions, 15 questions each from Biology, Chemistry Mathematics, and Physics. There will be four answer options. Total time for answering the test is 180 minutes. Questions are multiple choice type with only one correct answer. The mode of the exam is computer-based.

Q:   What are the types of questions asked in the IISER Entrance Exam?
A:

The IISER Entrance Exam questions are objective type. These are multiple-choice questions with four options. The mode of the exam is computer-based. Test-takers have to select one option. Marks per question is four. One mark will be removed for wrong answers.

Q:   When will IAT 2026 Student Response Sheet release?
A:

Indian Institutes of Science Education and Research (IISER) will release the IISER Aptitude Test (IAT) 2026 Student Response Sheet in the second week of June 2026. Candidates can visit the official website of IISER and, after logging in with their credentials, can finally view their IAT 2026 Response Sheet. Candidates can finally tally up their marks scored in the IISER Aptitude Test.

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IISER Entrance Exam 2026: Subject Weightage

The IISER Entrance Exam Marking Scheme and subject weightage is as follows:

Subject

No. of Questions

Marks

Physics

15

60

Chemistry

15

60

Chemistry

15

60

Mathematics

15

60

Total

60

240

Marking scheme: Candidates will be awarded three marks for each correct answer. There is a negative marking of one mark for each incorrect answer.

IISER Entrance Exam Pattern 2026

The IISER Entrance Exam Marking Scheme is as follows:

Subject

No. of Questions

Marks

Physics

15

60

Chemistry

15

60

Biology

15

60

Mathematics

15

60

Total

60

240

Candidates will be awarded three marks for each correct answer. There will be a negative marking of one mark for each incorrect answer.

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About the Author
Vikash Kumar is a leading subject matter expert, specializing in K–12 education and competitive exam preparation for JEE Mains. With a BTech degree and over 10 years of experience in creating high quality content fo Read Full Bio
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Write here...

Answered 6 days ago

You can check the IISER exam pattern and syllabus on the website, iiseradmission.in. Knowing the paper pattern and syllabus for IISER, you can plan your preparation.

V

Vikash Kumar Vishwakarma

Contributor-Level 9

Answered 6 days ago

220+ marks are a good score in IISER.  Students must have a proper strategy to score high. They can plan their preparation according to the IISER exam syllabus. Practising previous year question paper and mock test will help in scoring good marks.

V

Vikash Kumar Vishwakarma

Contributor-Level 9

Answered a week ago

There is no fixed number of entering preference for the IISER Entrance Exam counselling process. There are seven IISER institutes offering 11 programmes. Candidates have to select at least one IISER. Higher the number of preferences, better will be their chance of seat allotment.

N

Nishtha Pathak

Beginner-Level 5

Answered a week ago

Once the IISER Entrance Exam counselling seat allotment result is declared, candidates have the following options.

  • FREEZE: By selecting this option, candidates confirm the acceptance of the offer, and that they will not participate in the next rounds of IISER Entrance Exam counselling. 
  • FLOAT: Selecti

...Read more

V

Vipra Garg

Beginner-Level 5

Answered a week ago

Seat Acceptance Fee or SAF is the fee to be paid to accept the allotted seat at a particular round of IISER counselling process. Unless the SAF is paid, candidates will not be considered for admission. 

L

Liyansha Shukla

Beginner-Level 5

Answered a week ago

During the IISER Entrance Exam counselling process, seats are allotted based on the following factors.

  • Seats available across IISER institutes in the current round of counselling
  • IAT Rank obtained by candidates
  • IISER preference given by the candidate
  • Candidate category.

Candidates are advised to fill as

...Read more

A

Akansha Thakur

Beginner-Level 5

Answered a week ago

IISER does not conduct the counselling or admission process for IISc Bangalore and IIT Madras through the IAT scores. These institutes conduct their own counselling or admission process. IISER counselling process is conducted only for seven IISER institutes located across India.

P

Pooja Kalra

Beginner-Level 5

Answered a week ago

The IISER Entrance Exam counselling process is conducted in online mode. Candidates have to register on the exam website and fill in their institute in course choices in order of preference. Based on that, the seat allotment will be released. They can either 'Freeze' the seat and take admission, or

...Read more

M

Manashjyoti Shukla

Beginner-Level 5

Answered a week ago

The IISER entrance exam scores are accepted by 11 IISER institutes across India. Apart from that, IISc Bangalore and IIT Madras also consider the scores for admission to BS courses offered by them.

P

Piyush Singh

Beginner-Level 5

Answered 2 weeks ago

Passed 10+2 from a recognised board in 2024, 2025, or 2026 with minimum 60% marks in aggregate (55% for SC /ST /PwD students) are eligible to apply for IISER exam 2026. Candidates must have taken any three subject among Physics, Chemistry, Mathematics, and Biology in class 12. 

V

Vikash Kumar Vishwakarma

Contributor-Level 9