Last successful check: 4 Nov 2026. The information below comes from the named source; verify the authoritative notification before applying. A failed refresh never replaces previously saved details.
| Update type | Answer Key |
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| Recruiting authority | Indian Space Research Organisation (ISRO), Department of Space |
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| Last successful check | 4 Nov 2026 |
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| Last date | Not yet verified — check the notice |
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| Reference sources | |
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Notice information
- The ISRO Assistant & UDC Final Answer Key 2026 has been officially released by the ISRO Centralised Recruitment Board (ICRB) on 28 October 2026. Candidates who appeared for the written test held on 21 September 2026 for the posts of Assistant, Upper Division Clerk (UDC), Junior Personal Assistant (JPA), and Stenographer can now verify their responses against the official Answer Key 2026 through the candidate login page. This final Solution Key marks a critical step in the recruitment process, as it follows the initial provisional answer key and allows candidates to compare every marked answer with the officially released responses. With the Skill Test scheduled for 1 November 2026, applicants must act quickly to review their scores, estimate their performance, and prepare for the next stage. Read this comprehensive guide to access the direct download link, calculate your marks using the official marking scheme, understand the qualifying criteria, and learn what comes after the final answer key release.
ISRO Final Answer Key 2026 - Quick Overview
- isro.gov.in ↗Source-provided destination — verify before signing in or paying.
How to Download ISRO Assistant & UDC Final Answer Key 2026
- Follow these simple steps to access and download the official ISRO Answer Key 2026:
- Open the Answer Key login page from the Direct Download Link section above.
- Enter the requested login credentials on the page (such as your application number and date of birth or password).
- After successful login, open your response sheet and the final answer key displayed on the screen.
- Compare each of your marked answers with the officially released Solution Key 2026.
- Save or print the page for your records and score estimation before the skill test.
How to Calculate Your ISRO Written Test Score Using the Final Answer Key
- The ISRO written test carries negative marking. Use the following formula to calculate your estimated score based on the Answer Key 2026:
- Score = (Number of correct answers × 1) − (Number of wrong answers × 0.25)
- Key points about the marking scheme:
- +1 mark is awarded for every correct answer.
- -0.25 marks (negative marking) is deducted for every wrong answer.
- Unattempted questions carry no marks – neither positive nor negative.
- Example: If you answered 150 questions correctly and 30 incorrectly out of 200, your score would be: (150 × 1) − (30 × 0.25) = 150 − 7.5 = 142.5 marks out of 200.
3. Final Selection
- The final merit list is prepared based on written test marks, from among candidates who qualify in the skill test. The Skill Test is scheduled for 1 November 2026.
ISRO Recruitment 2026 - Complete Important Dates
ISRO Assistant & UDC Vacancy 2026 - Post-wise Details
Eligibility Criteria for ISRO Assistant, UDC, JPA & Stenographer 2026
- Note: Conversion of CGPA into percentage is not permitted when checking eligibility.
Age Limit for ISRO Recruitment 2026
- The minimum age is 18 years. Age is counted as on the application closing date (20 August 2026).
Application Fee and Refund Policy
- ₹500 for Assistant/UDC posts.
- ₹500 for JPA/Stenographer posts.
- ₹1,000 if applying for both categories.
- Women, SC, ST, PwBD and Ex-Servicemen candidates who appear in the written test are eligible for a full refund.
- Other candidates who appear in the written test receive a partial refund of ₹400.
- No refund is considered for candidates who do not appear in the written test.
Important Instructions for ISRO Candidates
- Only Indian nationals can apply.
- Selected candidates can be posted to any ISRO/Department of Space centre or unit and may be transferred.
- No travel allowance is paid for the written test.
- Candidates attending the skill test are reimbursed to-and-fro second-class train fare.
- Canvassing in any form leads to disqualification.
- Do not trust fake offers of appointment in ISRO.
ISRO Assistant and UDC Final Answer Key 2026 - Important Links
Q7. How is the final selection made after the skill test?
- Final selection is based on written test marks, from among candidates who qualify in the skill test. Candidates are shortlisted for the skill test in a ratio of up to 1:5 against category-wise vacancies, with a minimum of 10 candidates per post group.
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