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.
SciAstra IISER 2026 Books: Overview
When it comes to preparing for the IISER Aptitude Test, having exam-specific and well-structured study material can make a significant difference. The books offered by SciAstra are designed exclusively for students targeting IAT and similar research-oriented entrance exams. Unlike generic reference books, these materials are curated with a deep understanding of the IAT exam pattern, difficulty level, and conceptual focus.
SciAstra IAT 2026 books are built to provide a comprehensive preparation ecosystem. They are available in both subject-wise formats—covering Physics, Chemistry, Mathematics, and Biology—and all-in-one combo booksets that combine the entire syllabus into a structured learning path. This flexibility allows students to either focus on specific weak areas or follow a complete, guided preparation strategy from start to finish.
Key Book Categories:
Mastering Combo Booksets (Class 11 & 12)
Subject-wise Books (Physics, Chemistry, Maths, Biology)
Mock Test Books
These books are curated by experts from top institutes like IISc, IISER, and global universities.
IAT 2026 Books: Mastering Combo (Class 11 & 12)
SciAstra offers three main combo sets tailored to different preparation stages:
1. Class 11 Mastering Combo Bookset
Mastering Combo – Class 11th Bookset (2025–26)
Complete Class 11 foundation set covering all four subjects for IAT preparation. This bookset is ideal for beginners who are starting their IAT journey early. It focuses on building strong fundamentals across Physics, Chemistry, Mathematics, and Biology.
2. Class 12 Mastering Combo Bookset
Mastering Combo – Class 12th Bookset (2025–26)
Advanced-level preparation set aligned with Class 12 syllabus and IAT difficulty. Designed for students in their final school year, this set emphasizes advanced concepts, problem-solving, and exam-level preparation.
3. Complete Class 11 + 12 Combo Bookset
Mastering Combo – Class 11 & 12 Bookset (2025–26)
Full syllabus combo set covering complete IAT preparation from basics to advanced level. This is the most comprehensive package, combining both Class 11 and 12 content into a single structured learning path. It is perfect for droppers or students who want a complete preparation system in one place
IAT & NEST 2026 Crash Course
SciAstra launched the IAT & NEST 2026 Crash Course, dedicated to preparing students for IAT 2026 and NEST 2026, on March 30, 2026, in offline mode.
If you wish to broaden the choices of institutes to pursue undergraduate science and research courses, you should prepare for both exams and register for our crash course.
Enrol Now- Click Here
What Makes These Combo Booksets Unique?
Check out the characteristics from here:
Feature | Description |
Complete Syllabus Coverage | Covers the entire IAT syllabus across Physics, Chemistry, Mathematics, and Biology, ensuring no important topic is missed and enabling streamlined preparation. |
Structured Learning Approach | Follows a step-by-step progression: theory in simple language → basic questions → intermediate practice → advanced problems, helping students build confidence gradually. |
Concept-Focused Content | Emphasizes conceptual clarity, application-based learning, and analytical thinking instead of rote memorization, aligning with IAT exam requirements. |
Read More
Subject-wise SciAstra Books for IAT 2026
If you prefer targeted preparation, SciAstra also offers subject-specific books.
Physics Books for IAT 2026
Physics in IAT focuses heavily on conceptual understanding and problem-solving.
SciAstra Physics books include:
Clear explanation of concepts
Practice problems (basic to advanced)
Previous year questions
For best results, combine these books with conceptual understanding techniques and regular practice.
Chemistry Books for IAT 2026
Chemistry is divided into:
Organic Chemistry
Inorganic Chemistry
Physical Chemistry
SciAstra Chemistry books cover:
Fundamental concepts like bonding, equilibrium
Numerical problem-solving
Reaction-based understanding
These books work best when combined with NCERT for strong fundamentals.
Biology Books for IAT 2026
Biology in IAT is more conceptual compared to NEET.
SciAstra Biology books focus on:
Genetics
Ecology
Evolution
Cell Biology
They also include diagrams, flowcharts, and conceptual explanations for better retention.
Mathematics Books for IAT 2026
Mathematics requires consistent practice and clarity in topics like:
Algebra
Calculus
Trigonometry
Geometry
SciAstra Maths books offer:
Topic-wise questions
Concept building
Practice exercises with increasing difficulty
These books are especially helpful for improving problem-solving speed.
Mock Test Books for IAT 2026
Mock tests are essential for cracking IAT.
SciAstra provides dedicated mock test books that include:
Full-length practice tests
Previous year questions
Exam-level difficulty
These mock books help you:
Improve time management
Identify weak areas
Get real exam experience
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.
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