ISRO Answer Key 2026 Out, Check UDC, Assistant Posts Response Sheet PDF and Objection Link

The ISRO UDC and Assistant Answer Key 2026 has been released today 25 September 2026 on its official wesbite. The provisional answer key of the Computer-Based Test conducted on 21st September 2026 has been uploaded on the official ISRO recruitment portal for the candidates who appeared in the exam.

The examination was held for recruitment to the posts of Assistant, Junior Personal Assistant (JPA), Upper Division Clerk (UDC) and Stenographer under Advt No. ISRO:ICRB:01(A-JPA):2026

ISRO UDC and Assistant Answer Key 2026 Out

The ISRO 2026 provisional answer key allows candidates to compare their responses with the official answers and estimate their probable marks. Candidates can also challenge answers during the objection window, subject to ISRO instructions. The last date to rasie objection and download the answer key is 28th September 2026 (10 AM).

ISRO UDC and Assistant Provisional Answer Key: Highlights

ISRO UDC Answer Key 2026 Link

The ISRO UDC Answer Key 2026 link has been activated on September 25, 2026. Candidates who appeared in the September 21 CBT should use the official ISRO portal to access the provisional key and response sheet.

ISRO UDC Answer Key 2026 Direct Link (Active)

How to Download ISRO UDC and Assistant Answer Key 2026?

1. Visit the official ISRO website at isro.gov.in.
2. Open the Careers section.
3. Locate the recruitment notice for Assistants, Junior Personal Assistants, Upper Division Clerks and Stenographers.
4. Click the link for the provisional answer key/response sheet.
5. Enter the required login details.
6. Submit the information.
7. Check the answer key along with the recorded responses.
8. Download and save the response sheet for calculating the expected score.

ISRO Exam Answer Key 2026 Out! Share Details With Us

What Will Be Available With the ISRO Answer Key?

Candidates should look for the following information after logging into the answer-key portal:

• Candidate details
• Exam details
• Question ID
• Candidate’s response
• Correct answer
• Question/shift details
• Objection instructions

ISRO Assistant Answer Key 2026: Objection Window

The answer key released is provisional, meaning candidates can raise objections against answers they believe are incorrect. ISRO is providing an objection facility and candidates are required to pay ₹100 per question, along with applicable bank charges. The fee will be returned if the objection is accepted. The objection can be raise between 25 to 28 September 2026.

How to Raise Objection?

Once the objection facility is activated, candidates should go through the instructions below:

1. Visit the ISRO recruitment portal.
2. Open the link for raising objections against the provisional answer key.
3. Log in using the required credentials.
4. Select the question against which the objection is being raised.
5. Select or enter the candidate’s claimed correct answer.
6. Upload supporting evidence, wherever required.
7. Pay the applicable objection fee.
8. Submit the objection form.
9. Save the confirmation page or transaction details.

How to Calculate Expected Marks?

Candidates can use the response sheet and provisional answer key to calculate their estimated marks. The basic process is:

(Correct Responses × Marks for Correct Answer) − (Incorrect Responses × Negative Marks) = Estimated Score

What Happens After Provisional Answer Key?

Candidates get an opportunity to point out discrepancies through the prescribed objection mechanism. Once all the objections have been reviewed, the final answer key will be released. This final answer key will be used in the preparation of the ISRO UDC and Assistant Result 2026.