ISRO Scientist/Engineer SC 2025 — Written Test / CBT
10 Written Test / CBT papers from the 2025 ISRO Scientist/Engineer SC examination, conducted by ISRO Centralised Recruitment Board (ICRB), Indian Space Research Organisation, Department of Space. Each paper links to its official source. Written Test / CBT: Objective test: Part A on the candidate's engineering discipline and Part B aptitude/ability test.
Written Test / CBT pattern
Part A Area/Discipline Specific: 80 multiple-choice questions, 80 marks, 90 minutes, +1 for each correct answer, 0 for unattempted and -1/3 for each wrong answer. Part B Aptitude/Ability Test: maximum 15 multiple-choice questions on numerical, logical, diagrammatic, abstract and deductive reasoning, 20 marks, 30 minutes, no negative marking. Total 100 marks; unreserved candidates must score 50% in each part (40% for PwBD candidates where posts are reserved). (Advt. No. ISRO:ICRB:03(EMC):2026 dated 27.08.2026) Official source
Patterns change between cycles. Confirm in the latest official notification.
| Exam paper | Year | Stage | Language | Type | Actions |
|---|---|---|---|---|---|
| ISRO Scientist/Engineer SC Written Test 2025 – Computer Science Computer Science · 26 Oct 2025 · 846 KB · Source: isro.gov.in | 2025 | Written Test / CBT | Bilingual | Official Paper | |
| ISRO Scientist/Engineer SC Written Test 2025 – Electronics Electronics · 26 Oct 2025 · 967 KB · Source: isro.gov.in | 2025 | Written Test / CBT | Bilingual | Official Paper | |
| ISRO Scientist/Engineer SC Written Test 2025 – Mechanical Mechanical · 26 Oct 2025 · 814 KB · Source: isro.gov.in | 2025 | Written Test / CBT | Bilingual | Official Paper | |
| ISRO Scientist/Engineer SC Written Test 2025 – Architecture (Final Answer Key) Architecture · 26 Oct 2025 · 184 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Civil (Final Answer Key) Civil · 26 Oct 2025 · 185 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Computer Science (Final Answer Key) Computer Science · 26 Oct 2025 · 316 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Electrical (Final Answer Key) Electrical · 26 Oct 2025 · 191 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Electronics (Final Answer Key) Electronics · 26 Oct 2025 · 299 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Mechanical (Final Answer Key) Mechanical · 26 Oct 2025 · 314 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key | |
| ISRO Scientist/Engineer SC Written Test 2025 – Refrigeration & Air-conditioning (Final Answer Key) Refrigeration & Air-conditioning · 26 Oct 2025 · 186 KB · Source: isro.gov.in | 2025 | Written Test / CBT | English | Answer Key |
- ISRO Scientist/Engineer SC Written Test 2025 – Computer Science2025Written Test / CBTBilingualOfficial Paper
Computer Science · 846 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Electronics2025Written Test / CBTBilingualOfficial Paper
Electronics · 967 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Mechanical2025Written Test / CBTBilingualOfficial Paper
Mechanical · 814 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Architecture (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Architecture · 184 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Civil (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Civil · 185 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Computer Science (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Computer Science · 316 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Electrical (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Electrical · 191 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Electronics (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Electronics · 299 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Mechanical (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Mechanical · 314 KB · Source: isro.gov.in
- ISRO Scientist/Engineer SC Written Test 2025 – Refrigeration & Air-conditioning (Final Answer Key)2025Written Test / CBTEnglishAnswer Key
Refrigeration & Air-conditioning · 186 KB · Source: isro.gov.in