# ISRO Recruitment Process and Eligibility

ISRO recruits Scientist/Engineer SC through the ICRB written exam: 80 branch-technical objective questions plus 15 general aptitude questions in 120 minutes, with one-third negative marking, followed by an interview. Final selection weighs the written test and interview equally (50:50).

_Source: Astra (https://useastra.in). Updated 2026-10-24._

## Eligibility

| Criterion | Requirement |
| --- | --- |
| Batch | 2026 and earlier |
| CGPA | First class B.E./B.Tech (65% or 6.84 CGPA) |
| Degrees | B.E./B.Tech, M.E./M.Tech |
| Branches | Electronics, Mechanical, Computer Science |
| Backlogs | As per notification |
| Gap years | Age limit applies (around 28) |

## Recruitment rounds, in order

1. **ICRB Written Exam** -- 80 branch-technical plus 15 aptitude questions in 120 minutes, with one-third negative marking.
2. **Interview** -- For shortlisted candidates; carries 50% weight in final selection.

## Online test pattern

| Section | Questions | Time | Topics |
| --- | --- | --- | --- |
| Branch Technical (Part A) | 80 | 120 min | Core branch subjects |
| General Aptitude (Part B) | 15 | -- | Quantitative, Reasoning |

## Interview rounds

- **Technical Interview** (Core branch depth) -- In-depth branch concepts; 50% of the final score.

## Topics to prepare

- Core branch subjects (ECE / Mechanical / CS)
- GATE-level fundamentals
- Quantitative Aptitude
- Logical Reasoning

## Preparation notes

- Prepare branch technical thoroughly at GATE level, it is 80 of 95 questions
- Mind the one-third negative marking, skip questions you are unsure of
- The interview carries 50% weight, prepare to explain concepts deeply
- Practise the general aptitude and reasoning section too

## Previously-asked questions

- Interview (8 questions): https://useastra.in/campus/isro/interview
- Aptitude (12 questions): https://useastra.in/campus/isro/aptitude
- Core CS (20 questions): https://useastra.in/campus/isro/core-cs

Full guide: https://useastra.in/campus/isro