Posted on: April 4, 2026
Working at the Indian Space Research Organisation (ISRO) is a dream for many engineering graduates. The ISRO Scientist/Engineer ‘SC’ (Computer Science) 2025 written test was conducted on October 26, 2025, for a total of 45 vacancies. Practicing with the official Set C paper is essential for anyone aiming for the next recruitment cycle.
2. Detailed Exam Pattern
The 2025 exam was highly competitive, featuring a two-part objective paper conducted over 120 minutes.
| Section | Focus Area | Questions | Marks | Negative Marking |
|---|---|---|---|---|
| Part A | Core CS Subjects (GATE level) | 80 MCQs | 80 | -1/3 per wrong answer |
| Part B | Aptitude & Reasoning | 15 MCQs | 20 | No Negative Marking |
3. Subject-wise Syllabus Analysis
Based on the Set C paper, the questions were heavily centered on the following core domains:
- Data Structures & Algorithms: Focus on time complexity, trees, and graph algorithms.
- Operating Systems: Heavy emphasis on CPU scheduling and memory management.
- Computer Networks: TCP/IP layers, routing protocols, and IP addressing.
- Databases (DBMS): Normalization (1NF-BCNF) and SQL query logic.
- Digital Logic & Organization: K-maps, multiplexers, and pipeline hazards.
- Theory of Computation: DFA/NFA and Context-Free Grammars.
4. Eligibility & Selection (Quick Checklist)
- Degree: B.E/B.Tech in CSE with a minimum of 65% marks or 6.84/10 CGPA.
- Age: Up to 28 years (as of June 16, 2025).
- Final Merit: Based on a 50:50 weightage between the Written Test and the Personal Interview.
[Download PDF] ISRO Scientist/Engineer ‘SC’ (Computer Science) 2025 Question Paper – Set
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PDF Overview
| Question Paper | [PDF] Download ISRO Scientist/Engineer ‘SC’ (Computer Science) 2025 Question Paper – Set C |
| PDF Size | 20 MB |
| Total Pages | 43 |
| Exam Name | ISRO |
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