IISER / IAT
IISER Aptitude Test hub — IAT pattern and syllabus, reasoning-first preparation, cutoffs, IISER campuses, the BS-MS programme and research careers.
What this hub covers
Every topic below opens a full page — what it means in practice, how Prepkunj teaches it, common mistakes, FAQs and the free resources to use next.
SyllabusExam patternEligibilityApplication processImportant datesPreparation strategyStudy plansChapter-wise weightageSubject-wise weightageCutoffMarks vs rankPrevious year questionsMock testsImportant questionsRevision strategyBest booksCommon mistakesCounsellingIISER admission processIISER campusesBS-MS programmeIISER vs IITIISER vs NISERIISER vs IIScIAT vs JEEIAT vs NEETResearch careers
Recommended next: tests, PYQs, notes & courses
Hand-picked from everything Prepkunj already publishes for IISER / IAT — free resources first, guided programs last.
Free tests to attempt next
Practise this topic immediately — every test is graded instantly with solutions.
Cell Cycle and Cell Division — 30-question testGraded Biology chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questionsChemical Kinetics — 30-question testGraded Chemistry chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questionsElectrostatics — 30-question testGraded Physics chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questionsSequences and Series — 30-question testGraded Mathematics chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questionsBuild a custom practice setFilter the question bank by exam, subject, chapter, topic and difficulty, then practise a set built for this topic.Question bank
Previous year questions
PYQs show exactly how this topic is asked — start with the most recent papers.
IISER IAT previous year papersIISER IAT question papers from 2017 to 2025 with answer keys — free PDF downloads across Biology, Chemistry, Mathematics and Physics.8 yearsIAT Question Paper 2025Solve the 2025 paper under timed conditions, then review the topics you lost marks in.PDFIAT Question Paper 2024Solve the 2024 paper under timed conditions, then review the topics you lost marks in.PDFIAT Question Paper 2023Solve the 2023 paper under timed conditions, then review the topics you lost marks in.PDFAll previous year papersYear-wise question papers and answer keys for NEET, JEE, BITSAT, IISER IAT and the SAT.PYQ library
Notes and study material
Read the concept first, then attempt the test — notes are written for exam recall.
Algebra notesMathematics revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notesAtomic Structure and Periodicity notesChemistry revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notesBiology in Human Welfare notesBiology revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notesBiomolecules, Polymers and Environmental Chemistry notesChemistry revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notesIISER / IAT exam informationPattern, syllabus, marking scheme, important dates and cutoff trends in one place.Exam info
Guided courses for this topic
Want a mentor to drive the plan? These programs cover this topic with live teaching and tests.
IISER / IAT Online CoachingAptitude-driven prep for IISER, NISER & pure-science aspirants5 formats2 Year IISER / IAT Course2 Years · 900 teaching hours • Live Online / Hybrid₹1,51,0001 Year IISER / IAT Course1 Year · 500 teaching hours • Live Online / Hybrid₹81,0001-on-1 Premium classesFully personalised live mentoring at $15/hour with a plan built around your weak topics.$15 / hourBook a free demo classSit in a live class, meet the faculty and get a study plan — no payment needed.Free