IISER IAT Previous Year Question Paper PDF: Download Year-Wise Papers with Solutions

IISER IAT Previous Year Question Paper PDF: Download Year-Wise Papers with Solutions

Jalla VenkateshUpdated on 24 Sep 2025, 05:38 PM IST

IAT Previous Year Question Paper: Candidates can check the IAT previous year question paper on this page. While preparing for the IISER IAT entrance exam, it is advised to solve past year papers to understand the benefits and answer frequently asked questions from students. The IAT paper consists of 60 multiple choice questions, with 15 each from Physics, Chemistry, Math, Biology. The difficulty level of questions in IAT is moderate. Each correct answer will be awarded 4 marks. 1 mark will be deducted for each incorrect answer. The Indian Institute of Science Education and Research Aptitude Test (IAT) is a highly competitive entrance examination conducted for admission into the five-year BS-MS dual degree programs offered by IISERs across India. In this article, candidates are advised to check the previous year's question paper below.

IISER IAT Previous Year Question Paper PDF: Download Year-Wise Papers with Solutions
IAT Previous Year Question Paper: Download Year-Wise Papers PDF with Solutions

IAT IISER Exam Particulars

Let’s understand the particular details about this exam before diving into the question paper.

Particulars

Details

Exam Name

IISER Aptitude Test (IAT)

Conducting Body

Indian Institutes of Science Education and Research (IISER)

Purpose

Admission to 5-Year BS-MS Dual Degree Program

Subjects Covered

Physics, Chemistry, Mathematics, Biology

Question Paper Format

Multiple Choice Questions (MCQs)

Number of Questions

60 questions (15 per subject)

Total Marks

180 marks

Marking Scheme

+3 for correct answer, -1 for incorrect answer

Medium of Exam

English

Availability of Papers

Limited official release; based on memory-based questions and unofficial sources

Benefits of Solving Past Papers

Understand exam pattern, identify important topics, improve time management

Recommended For

Students applying through IISER Aptitude Test (IAT) channel

IAT Previous Year Paper

In this section we will dive into a detailed question paper of each year.

You can also practice with the following model question papers:

Model IISER paper 1

IISER Biology Sample Paper 1

Model IISER paper 2

IISER Biology Sampler Paper 2

Model IISER paper 2 (Hindi)

IISER Biology Hindi Sampler Paper 2

Frequently Asked Questions (FAQs)

Q: What is the mode of the IAT exam?
A:

IISER IAT exam will be conducted in online (computer-based) mode across various test centers in India.

Q: Where can I find IISER IAT previous year question papers?
A:

Candidates can check the IISER IAT previou year question paper on the official website.

Q: Is there negative marking in the IISER IAT?
A:

Yes, there is negative marking. Each correct answer awards 3 marks, and 1 mark is deducted for every incorrect answer.

Q: How many subjects are included in the IISER IAT exam?
A:

The IAT includes four subjects: Physics, Chemistry, Mathematics, and Biology. Candidates can choose any three out of the four subjects while attempting the exam.

Articles
|
Upcoming Engineering Exams
Certifications By Top Providers
Basic Programming using Python
Via Indian Institute of Technology Bombay
Introduction to Aerospace Engineering
Via Indian Institute of Technology Bombay
Fundamental Concepts of Electricity
Via Indian Institute of Technology Bombay
Artificial Intelligence
Via Columbia University, New York
Computer Fundamentals
Via Devi Ahilya Vishwavidyalaya, Indore
B.Sc in Programming and Data Science
Via Indian Institute of Technology Madras
Udemy
 1525 courses
Swayam
 817 courses
NPTEL
 773 courses
Coursera
 697 courses
Edx
 608 courses
Explore Top Universities Across Globe

Questions related to IISER Aptitude Test

On Question asked by student community

Have a question related to IISER Aptitude Test ?

You can find IISER Aptitude Test (IAT) previous year question papers and answer keys on educational websites like Careers 360. They provide with the official question papers as well as the answer key.

Read more at

https://engineering.careers360.com/articles/iiser-2025-question-paper-solutions

Hello,

If you have uploaded the old EWS certificate (2024–2025) instead of the new one (2025–2026), there is a chance that it may not be accepted, as the IISER notification clearly asks for the valid and updated EWS certificate for the year 2025–2026.

Right now, if the correction window is closed, you won’t be able to change it. But don’t worry too much. Once the results are out and before the counselling starts (before 16 June), there is usually a document verification process. You may get a chance to upload the correct and updated certificate during that time.

Just make sure you get the 2025–2026 EWS certificate ready as soon as possible, so if they allow updates before counselling, you can upload the correct one.

Hope it helps !

Hello,

If you have selected OBC-NCL category and uploaded a Central OBC-NCL certificate , then there is no issue .

IISER accepts Central OBC-NCL certificate , as long as it is valid and issued by a competent authority. Just make sure the certificate is:

  • Issued within one year from the application date.

  • Clearly mentions OBC-NCL and your caste is in the central list .

If these points are okay, then your form is fine.

Hope it helps !

Hello aspirant,

Applicants must take either the JEE Main or JEE Advanced exam in order to be considered for admission to the best engineering institutes in India. JEE Advanced and Main are administered by separate bodies. Because the JEE Advanced exam is more difficult than the JEE Main exam, candidates who are prepared for it have an advantage.

To know the complete preparation strategies, you can visit our website by clicking on the link given below.

https://engineering.careers360.com/articles/how-should-preparation-strategies-differ-for-jee-main-and-jee-advanced

Thank you

Hope this information helps you.

Hello reader,

Last year that is 2023 around 9.5 lakh students attempted for jee mains round one, while 8.6 lakh students attempted for jee mains round two. Across both the sessions around 12 lakh students sat for the jee mains exam in year 2023.