IISER (IAT) Sample Papers

Candidates have 180 minutes to answer 60 questions from Biology, Chemistry, Mathematics, and Physics. The IAT 2026 has been scheduled to be conducted on Sunday, 7 June 2026, from 9:00 AM. To support your preparation journey, the Mockers team is offering IISER (IAT) sample papers for free, which are designed by experts strictly adhering to the official syllabus (NCERT) and the exam pattern, such as the question structure. Our online sample tests are distributed in a subject-wise manner, with multiple sets allowing you to solve hundreds of questions for free. Each sample test is a way for you to understand your current preparation level for that particular subject.

Moreover, using IISER (IAT) sample papers with solutions, you can self-evaluate under time pressure, find areas to improve, and revise your previous learning—all at once, for free. To begin the test session, follow the steps I’ve mentioned later on this page, or you can explore the platform to find them yourself. Continue reading to know more about the sample question papers and the exam.

IISER (IAT) Important Dates

The official website has announced the IISER Aptitude Test (IAT) 2026 exam date and other important dates you should be aware of. The table below contains the important dates as mentioned on the official IISER IAT website. For accuracy, you can cross-check these on the official website.

IISER (IAT) Exam Sample Papers for All Subjects

In the IISER Aptitude Test (IAT), all four subjects (Physics, Chemistry, Maths, and Biology) are mandatory for all candidates. To make the practice and revision process more efficient and helpful, we have provided IISER (IAT) exam sample papers for all subjects in multiple sets. In order to build confidence in each subject, make sure you do not mix questions across subjects at once. Practising one subject at a time can help you better understand your knowledge and skills for the exam.

• IISER Sample Paper for Physics
• IISER Sample Paper for Chemistry
• IISER Sample Paper for Mathematics
• IISER Sample Paper for Biology

How Effective Are Online Sample Papers for IISER (IAT) Preparation?

IISER (IAT) entrance exam sample papers are very effective for preparation if used properly. Many think sample question papers (SQPs) are just a practice tool, but they are designed to shape your exam strategy, thinking style, and performance under pressure. Here is a breakdown to understand this better:

1. They Replicate the Real Exam Experience: Mockers follow the actual CBT format of the IAT in the IISER (IAT) entrance test sample papers to help you get used to the interface, timer, and pressure. With each practice session, you learn how to quickly choose which questions to solve, your exam-day anxiety reduces, and you build exam confidence while still in the preparation phase.
2. Help You Improve Time Management: Knowledge alone cannot help you ace the IAT exam; you also need speed and accuracy. When you solve the sample papers for IISER (IAT), it forces you to perform under strict time limits. Throughout the practice session, you learn when to skip, attempt, or revisit questions. In other words, you develop your own attempt strategy, which is unique to you and efficient enough to make you stand out from the crowd.
3. Know Your Weak Areas Clearly: At Mockers, you get an instant analysis report for each test set you attempt. You get true clarity on everything from time spent per question to accuracy vs. guesswork. The IISER (IAT) exam sample question paper tests enable you to find weak topics and focus on revision where it matters most. The questions you attempt online become your diagnostic tool, not just a practice resource.

How to Solve Sample Papers for IISER (IAT) Online

You can practise IISER (IAT) online sample papers at Mockers—here are the steps to follow:

• Start by visiting our official website: www.mockers.in. 

• Next, go to the menu or navigation section and click on ‘Exam Categories’, then ‘Engineering’, and finally on ‘IISER’.

• The IISER (IAT) mock test page will open, where you will see several buttons in the top section—click on ‘(IAT) Sample Paper’ to access the subject-wise list of IISER (IAT) sample papers online tests.

• Now, click on any subject → pick a set number and click on the ‘Start’ button to begin the free online IISER (IAT) sample papers tests session.

What Chapters to Prioritise for IISER IAT (Subject-Wise)

The syllabus is strictly based on the Class 11 and 12 NCERT curriculum, so you should prioritise these chapters from each subject. We have prepared this high-weightage chapter list based on the last 5 years of IISER IAT question papers.

Key Findings from IISER Aptitude Test PYQs Analysis:

• Physics: Questions have moved from standard numericals to more theoretical and application-based questions recently.
• Chemistry: Physical Chemistry is often at the JEE Main level. However, a heavy focus is placed on Organic mechanisms and Inorganic periodic trends.
• Mathematics: This section is moderate to difficult, with a key focus on calculus and algebra.
• Biology: Conceptual clarity is a must for Biology, as in recent years, questions have appeared trickier and more non-repetitive.

Conclusion

More than a practice tool, the IISER (IAT) sample papers with solutions work as a decision-making tool for your preparation. Each test set helps you understand where you stand in your exam preparation based on your current studies and guides you toward the right direction to focus on. The key to success in the IAT exam is how well you apply knowledge, analyse, and adapt under pressure. Use our sample papers for a continuous feedback loop — attempt, analyse, improve, and repeat. Direct links to attempt the test sets are available here for free.