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    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 06 Jun 2026, 06:22 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.

    ParticularsDetails

    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

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    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: 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: 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.

    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: 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.

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    Questions related to IISER Aptitude Test

    On Question asked by student community

    Have a question related to IISER Aptitude Test ?

    Hi! To prepare for the IISER Aptitude Test, you need to understand the syllabus, exam pattern, and follow a proper preparation strategy. Click on the links below to learn more.

    Link: IISER Syllabus and Pattern
    IISER Preparation Tips

    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

    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

    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