Exam Pattern
IISER IAT Exam Pattern
IISER Aptitude Test 2026
The IISER IAT exam pattern below is checked stage by stage, so one stage cannot inherit another stage's scoring rules.
IAT
Official 2026 pattern| Questions | 60 |
| Total marks | 240 |
| Duration | 180 minutes |
| Negative marking | 1 per wrong answer |
| Sections | Biology, Chemistry, Mathematics, Physics |
| Test | Qs | Marks | Min |
|---|---|---|---|
| Biology | 15 | 60 | — |
| Chemistry | 15 | 60 | — |
| Mathematics | 15 | 60 | — |
| Physics | 15 | 60 | — |
Timing: Single unrestricted 180-minute timer for the Full Mock, covering all four sections; no sectional lock..
The official IAT 2026 question paper is bilingual English & Hindi; this mock is English-only as a platform limitation, not a claim that the official exam itself is English-only. Syllabus is primarily CBSE 2025-26 / NCERT Classes XI-XII, with foundational Class X knowledge sometimes required. No current-affairs section; scientific facts are syllabus-appropriate and do not depend on post-exam news. NEST, JEST and IISER interview/counselling stages are separate products and not part of this mock.
Official source · checked 31 August 2026