IISER exam books must be the perfect blend of the resource material of Physics, Chemistry, Mathematics and Biology subjects. IAT Books 2026 must provide the detailed IISER syllabus 2026 from Class 11 and 12, practice questions, solved examples and mock tests. IISER books at SciAstra provide the contents of NCERT textbooks for building strong fundamentals, to advanced reference guides for tackling high-level questions
Whether a candidate has just started or a candidate is at the final phase of the revision, SciAstra books is the right set of IISER books that one needs to select for securing a top rank in the exam.
Latest Update:
IAT 2026 Changes in Courses, Seats, Syllabus & More
IAT 2026 to be held on June 7; Application Starts on March 5; Check New Updates & Eligibility Here
IAT 2026 Exam Dates
IAT 2026 dates have been announced. Check out these dates below:
Event Name | Event Date |
|---|---|
IISER 2026 Exam Notification | February 7, 2026 |
IISER Exam 2026 Registration Date | March 5, 2026 to April 13, 2026 |
IISER Aptitude Test 2026 Application Correct | April 16, 2026 to April 18, 2026 |
IISER Admit Card 2026 | May 24, 2026 |
IISER Exam 2026 | June 7, 2026 |
IISER Provisional Answer Key 2026 | June 7, 2026 |
ICandidate Response form upload & Portal opens for filing Objections | June 9, 2026 |
Portal closes for filing Objections | June 13, 2026 |
Windows for Selective Information/Document Upload in Application Form | June 13, 2026 - June 21, 2026 |
Last date for Selective Information / Document upload in Application Form | June 21, 2026 |
What are the best books for IAT 2026 preparation?
The best books for IAT 2026 are those that focus on conceptual clarity and application-based learning. SciAstra books are specifically designed for IAT and NEST, covering the full syllabus with structured theory and practice. Additionally, NCERT books should be used alongside them for building strong fundamentals in all four subjects.
Are NCERT books enough for IAT preparation?
NCERT books are essential for building a strong foundation, especially in Chemistry and Biology. However, they are not sufficient alone. IAT requires deeper conceptual understanding and application-based practice, so students should supplement NCERT with exam-focused resources like SciAstra books and mock test series.
When should I start preparing for IAT 2026 using SciAstra books?
Ideally, students should start in Class 11 to build strong fundamentals gradually. However, Class 12 students and droppers can still achieve excellent results with a focused and structured study plan. Using well-organised resources like SciAstra books helps streamline preparation even with limited time.
Why Choose SciAstra Books?
All-in-One Learning: SciAstra’s books are designed to take you from fundamentals to advanced levels. Starting with foundational concepts (Level 1), they progress into practice questions directly drawn from past IAT and NEST papers, going back to 2007 (Level 2).
Massive Content but Affordable Pricing: With over 4,100 pages covering PCMB (Physics, Chemistry, Mathematics, Biology), these books are offered at just ₹3,999, covering printing, binding, and doorstep delivery.
Try Before You Buy: Want a sneak peek? Free sample PDFs (two chapters per book) are available on the SciAstra App so you can evaluate the content before committing.
How many questions are there in the IAT question paper?
There are a total of 60 questions in the IAT question paper from Physics, Chemistry, Mathematics and Biology sections.
A total of 15 questions are asked from each section/subject. Each question carries 4 marks.
Are all four subjects (PCMB) compulsory in the IAT?
The question paper of IAT contains all four sections: Physics, Chemistry, Mathematics and Biology. But, it is not compulsory for candidates to attempt all four sections to get admission to IISERs. It is recommended to attempt all four sections to increase your overall score and chances of selection.
For admission to IIT Madras, IIT Guwahati, and IISc Bengaluru, it is compulsory to attempt Physics, Chemistry and Mathematics.
How many sections are there in the IAT question paper?
There are four sections in the IAT question paper:
1. Physics (15 questions, 60 marks)
2. Chemistry (15 questions, 60 marks)
3. Mathematics (15 questions, 60 marks)
4. Biology (15 questions, 60 marks)
All the questions in these sections are multiple-choice based questions (MCQs). These questions are asked from NCERT Class 11 and Class 12 PCB syllabi.
IISER Exam 2026 Test Series Launched
The SciaAstra team has recently launched a FOCUS test series, which will emphasise Full Online Controlled Understanding and Simulation, helping candidates experience the real-time environment of the IISER aptitude test 2026.
The IAT 2026 FOCUS mock test is designed based on the official exam pattern, and the difficulty level is determined through an in-depth analysis of previous years’ question papers. Candidates will get Unit-wise, Half-length, and Full-length test series, covering all chapters to assess their domain understanding, cognitive skills, and analytical abilities as per the IISER 2026 syllabus.
Attempt the IISER Exam 2026 Test Series to check your exam preparation level to get admissions to the IISERs, IISc and IIT Madras here:
Should I use separate books for each subject of IAT or combo booksets?
It depends on your preparation strategy. IAT Combo bookset Vol. 1 and IAT Combo bookset Vol. 2 are ideal for structured, end-to-end preparation covering all subjects. However, subject-wise books are useful if you want to strengthen specific weak areas. A balanced approach—using combo sets with targeted subject practice—often works best.
When should I start preparing for IAT 2026 using SciAstra books?
Ideally, students should start in Class 11 to build strong fundamentals gradually. However, Class 12 students and droppers can still achieve excellent results with a focused and structured study plan. Using well-organised resources like SciAstra books helps streamline preparation even with limited time.
