ISRO Answer Key 2026 has been released for candidates who appeared in the Computer Based Test conducted on 21 September 2026 for Assistant, Upper Division Clerk (UDC), Junior Personal Assistant (JPA) and Stenographer posts under Advertisement No. ISRO:ICRB:01(A-JPA):2026. The provisional response-sheet and objection process is now the immediate action point for candidates. ISRO’s official Careers page lists the response-sheet and objection-management portal. Official ISRO Careers.

What Happened
ISRO has activated the provisional answer-key and recorded-response facility for the recruitment CBT held on 21 September 2026. Candidates can compare their marked answers with the provisional key and use the official objection mechanism within the permitted window. Current exam coverage reports that objections can be raised up to 27 September 2026. The final key and subsequent selection steps remain subject to ISRO’s evaluation process.
Why It Matters
The answer key is important because it turns the completed CBT into an evidence-based score review. Candidates should not rely only on memory after the exam. The recorded response sheet shows what was actually marked, while the provisional key provides the reference answer. Together they allow candidates to identify likely correct, incorrect and disputed questions before the final evaluation.
Key Facts
| Item | Detail |
|---|---|
| Organisation | Indian Space Research Organisation |
| Advertisement | ISRO:ICRB:01(A-JPA):2026 |
| Posts | Assistant, UDC, JPA, Stenographer |
| CBT date | 21 September 2026 |
| Answer key | Released |
| Reported objection deadline | 27 September 2026 |
How to Check the Answer Key
- Open the official ISRO Careers page.
- Find Advertisement No. ISRO:ICRB:01(A-JPA):2026.
- Open the candidate response-sheet and objection-management link.
- Log in with the credentials requested by the portal.
- Download or save the recorded response and provisional key.
- Compare each question carefully before deciding whether to file an objection.
How to Calculate an Expected Score
The safest approach is to use the marking instructions applicable to the recruitment notice rather than applying a generic competitive-exam formula. Create a simple table with question number, your response, official provisional answer and whether the question is disputed. Count only questions supported by the published marking scheme. If an answer appears ambiguous, record the evidence and use the official objection process rather than adjusting the score informally.
When Should a Candidate Raise an Objection?
An objection should be based on a clear discrepancy between the provisional answer and the authoritative material relevant to the question. A useful representation includes the question number, the selected answer, the provisional key answer and a concise reason supported by a textbook, official document or other authoritative reference where the portal permits supporting material. Objections submitted only because an answer is unfamiliar are weaker than evidence-backed objections.
What Happens After the Provisional Key?
The provisional key is not necessarily the final evaluated key. After objections are reviewed, the organisation may accept, reject or modify individual answers before the final assessment. Candidates should therefore treat their calculated score as an estimate until ISRO publishes the final result or subsequent recruitment-stage notice.
Exam Relevance
For competitive-exam preparation, this update reinforces an important exam-administration sequence: CBT → response sheet → provisional answer key → objection window → final key/evaluation → result. Understanding this sequence is useful for candidates across government and technical recruitment examinations.
Static GK Connection
ISRO stands for Indian Space Research Organisation and functions under the Department of Space, Government of India. Its headquarters are in Bengaluru, Karnataka. The institution is India’s national space agency and works across launch vehicles, satellites, space science and applications.
Possible MCQ Areas
- Full form of ISRO.
- Advertisement number ISRO:ICRB:01(A-JPA):2026.
- CBT date: 21 September 2026.
- Posts covered by the recruitment.
- Difference between a provisional answer key and final key.
Important Caution
Do not miss the objection deadline published on the official portal. Keep a copy of the response sheet, the provisional key and any objection acknowledgement. The final key and result should be treated as the authoritative outcome.


