IISER Exam Pattern 2025 - Total Marks, Number of Questions, Negative Marking
IISER Aptitude Test (IAT) is an online MCQ examination consisting of questions from Physics, Chemistry, Math and Biology. There are four options of each question and the candidate has to choose the right option which can be reviewed or reanswered any time during the duration of the examination. Here we are looking at IISER exam pattern - exam mode, questions type, subject-wise number of questions, total marks, exam duration and negative marking.
IISER 2025 Exam Pattern
Given below is the IISER (IAT) exam pattern for 2025 :
| IISER Aptitude Test 2025 |
Paper Pattern |
| Exam Mode |
Online (Computer-Based Test) |
| Questions Type |
Multiple Choice Objective Type |
| IISER Total Questions |
60 Questions |
| IISER Total Marks |
240 |
| IISER Exam Duration |
3 hours |
| Negative Marking |
-1 for each wrong answer |
IISER Aptitude Test 2025 : Number of Questions
The total number of questions in IISER aptitude test is 60. There will be 15 questions asked from each subject - Physics, Chemistry, Math, Biology in the IAT paper.
IISER Aptitude Test 2025 : Total Marks and Cutoff
IISER aptitude test total marks is 240. IISER aptitude test marking scheme : Physics - 60 marks, Chemistry - 60 marks, Math - 60 marks, Biology - 60 marks.
IISER Aptitude Test 2025 : Negative Marking
There is negative marking in the IISER aptitude test. 1 mark will be deducted for each wrong answer in the IAT paper.
IISER Paper Pattern : Subject-wise Questions and Marks Distribution
IISER subject-wise number of questions and marks distribution :
| Subject |
Number of Questions |
Total Marks |
| Physics |
15 |
60 |
| Chemistry |
15 |
60 |
| Math |
15 |
60 |
| Biology |
15 |
60 |
| Total |
60 |
240 |
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Best Books for IISER Aptitude Test
IISER Entrance Exam Details
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