ISRO ICRB Answer Key 2026 Released – Download UDC, Assistant & Steno PDF

The Indian Space Research Organisation (ISRO) has officially released the provisional ISRO ICRB Answer Key 2026 for the UDC, Assistant, and Steno Recruitment Examination on 25th September 2026. Candidates who appeared for the written exam on 21st September 2026 can now download the Answer Key 2026 and their response sheet as a PDF from the official website. This Solution Key allows you to evaluate your performance, calculate probable scores, and raise objections if needed. Check your responses against the official answers and plan your next steps for the final result. Read on for the direct download link, step-by-step instructions, objection procedure, and essential FAQs.

Key Details Table

Direct Download Links

Access the provisional answer key directly using the links below. You will need your registered mobile number and password to log in.

• Direct Download Link for ISRO ICRB Answer Key 2026
• ISRO Official Website – Careers Section

How to Download

Follow these steps to download your ISRO ICRB Answer Key 2026:

1. Step 1: Visit the official ISRO website at www.isro.gov.in.
2. Step 2: Go to the Latest Notifications or Careers section.
3. Step 3: Click on the link for ISRO UDC/Assistant/Steno Answer Key/Response Sheet PDF.
4. Step 4: Log in using your Mobile Number and Password.
5. Step 5: Download the answer key PDF and review your response sheet.

Your response sheet includes: candidate name, application/roll number, exam date & shift, question ID, your selected responses, and the official correct answers.

How to Calculate Scores

The exact marking scheme (marks per correct answer and negative marking) is specified in the official exam notification. Typically, ISRO follows a pattern of +1 mark for each correct answer and -0.25 or -0.33 marks for each incorrect answer, with no marks for unattempted questions. Since the provisional answer key does not include marks, you can manually calculate your estimated score as follows:

• Step 1: Count the number of questions you answered correctly (matching the official answer).
• Step 2: Count the number of incorrect answers (where your response differs from the official answer).
• Step 3: Multiply correct count by the marks per question (refer to your exam notification).
• Step 4: Multiply incorrect count by the negative marking fraction.
• Step 5: Subtract the negative marks from the positive marks to get your raw score.

We recommend cross-checking with the official marking scheme published in the recruitment advertisement.

Objection/Challenge Process

If you find any discrepancy in the provisional answer key, you can raise an objection online. The details are as follows:

• Objection Fee: ₹100 per question (plus applicable bank charges). The fee is refunded if the objection is accepted.
• Procedure:
  1. Log in to the official ISRO portal using your mobile number and password.
  2. Open the Answer Key Objection Portal.
  3. Select the question you wish to challenge.
  4. Upload valid documentary proof supporting your claim (e.g., reference from standard textbooks).
  5. Pay the objection fee online.
  6. Submit the form and download the acknowledgement receipt.
• Important: The exact last date for raising objections is not mentioned in the current notice; always check the official website for the deadline.

What's Next?

After the objection window closes, ISRO will review all challenges and release the final answer key. Based on the final key, the results for UDC, Assistant, and Steno posts will be prepared. Candidates can expect the ISRO ICRB Result 2026 to be published a few weeks after the final key. Stay updated through the official ISRO website and this page.

FAQs

1. When was the ISRO ICRB Answer Key 2026 released?

The provisional answer key was released on 25th September 2026, four days after the written exam on 21st September 2026.

2. How can I download the ISRO UDC Answer Key 2026?

Visit isro.gov.in, go to the Careers section, click on the answer key link, log in with your mobile number and password, and download the PDF.

3. Is the answer key available offline?

No, the answer key is available only as an online PDF through the official portal.

4. Can I challenge the ISRO Answer Key 2026?

Yes, candidates can raise objections online during the specified window. The fee is ₹100 per question, refundable if the objection is upheld.

5. What is the objection fee for the ISRO ICRB Answer Key?

The fee is ₹100 per question, plus applicable bank charges. It will be refunded only if the objection is found valid.

6. How to calculate my score using the answer key?

Use the marking scheme from your exam notification. Typically, each correct answer carries +1 mark, and each wrong answer has a negative marking of -0.25 or -0.33. Unattempted questions get no marks.

7. What details are mentioned on the response sheet?

Your response sheet includes candidate name, roll number, exam date/shift, centre, question IDs, your selected options, and the official correct answers.

8. When will the final result be declared?

After the objection period ends and the final answer key is released, the result is expected within a few weeks. Check the official website for updates.