ISRO VSSC Revised Answer Key 2026 Out – Post-Objection Portal for 16–17 Sep CBT

Objections closed, answers re-examined, and now the revised picture is out. The Vikram Sarabhai Space Centre (VSSC), part of the Indian Space Research Organisation (ISRO), published its post-objection management portal update on 29 October 2026 for the Computer-Based Test held on 16 and 17 September 2026. If you sat that CBT — for Technician-B, Draughtsman-B, Scientist/Engineer-SC or the other notified posts — this is the update that tells you where your answers stand after objections were reviewed.

Before you go hunting for a PDF, understand the format. This isn’t a single public answer-key PDF you download and tick off at home. VSSC has put the post-objection information behind a candidate login on its Careers page. You log in with your VSSC registration number, and you see the response and answer-key information for your own paper. That matters because the CBT covered several posts under four different advertisements, and your key is specific to your post and shift.

ISRO VSSC Revised Answer Key 2026: Key Facts

How to Access the Revised Key and Response Sheet

1. Open the VSSC official website at vssc.gov.in and go to the Careers page.
2. Find the notice titled “Post Objection Management Portal — CBT held on 16th and 17th September 2026”, dated 29 October 2026.
3. Open the candidate login link given in that notice.
4. Enter your VSSC registration number as the login ID, along with the other credentials the portal asks for.
5. View your response sheet alongside the revised answer key for your post.
6. Compare your marked answers with the revised key and work out your probable score.
7. Save or print the response sheet — you’ll want it when the result or shortlist arrives.

What “Revised” Actually Means Here

A provisional key invites objections. Candidates challenge questions they believe are wrong or ambiguous, and the centre’s experts review those challenges. The post-objection update reflects the outcome of that review. Some answers may have changed, some questions may have been dropped or re-evaluated — the portal shows the position after that process, not the first draft. That’s why estimating your score from the old provisional key alone can mislead you by a few crucial marks.

And here’s the part candidates sometimes miss: this update is not the result. It doesn’t say whether you’re shortlisted, and it doesn’t carry a cut-off. The result and any skill test or interview schedule come separately, through the same Careers page. What the revised key gives you is a realistic sense of where you stand before that announcement lands.

How to Estimate Your Score From the Revised Key

Once the portal shows your responses against the revised key, work through it methodically rather than eyeballing a rough total. Go question by question and mark each as correct, wrong, or changed since the provisional key. If your paper carries negative marking — and most ISRO CBTs do — apply the scheme from your original advertisement, not a figure from a random blog, because the penalty per wrong answer changes the total fast. Candidates who skip this step often overestimate by five to ten marks, which is exactly the margin that decides shortlists.

Pay special attention to any answer that changed between the provisional and revised keys. Those are the questions where objections succeeded, and they’re also the ones most likely to be discussed in candidate groups with wrong information attached. Trust the portal, not the group chat. And if a question you challenged still shows the original answer, that means the expert review didn’t accept the objection — it doesn’t mean your objection wasn’t seen.

When to Expect the Next Step

VSSC hasn’t tied the result date to this key update, and any date circulating in candidate groups right now is guesswork, not an announcement. The reliable pattern is: revised key first, then result and shortlist on the Careers page, then skill test or interview notices for the posts that carry them. Check vssc.gov.in once a day rather than refreshing it every hour — the notice will be there the moment it’s published, and no amount of refreshing makes it appear sooner. In the meantime, keep your registration number and response-sheet printout somewhere you can find them without digging through downloads.

A Quick Word on Fake Links

Every ISRO update spawns a wave of lookalike pages promising a direct PDF download. Don’t hand your registration number to any of them. The genuine route is vssc.gov.in, then Careers, then the 29 October notice. If a page asks for payment, or for details beyond your login credentials, it’s not VSSC. The centre does not charge for answer-key access.

Important Links

Related updates on this site: the KEA SWD Teacher Answer Key 2026, the RRB Section Controller Answer Key 2026, and the RRB NTPC UG CBT 2 Result 2026.

FAQs: ISRO VSSC Revised Answer Key 2026

Q1. Is the ISRO VSSC revised answer key 2026 released?
Yes. VSSC published the post-objection management portal update on 29 October 2026 for the CBT held on 16 and 17 September 2026.

Q2. Which posts does it cover?
The CBT under Advertisement Nos. 332, 334, 336 and 337, including Technician-B, Draughtsman-B, Pharmacist-A, Scientist/Engineer-SC, Light Vehicle Driver-A and PGT posts.

Q3. How do I check the revised answer key?
Go to vssc.gov.in, open Careers, find the 29 October 2026 post-objection notice, and log in with your VSSC registration number to view your response sheet and revised key.

Q4. Is there a public PDF of the revised key?
The update is delivered through the candidate login portal, not as a single public PDF. Your key is specific to your post and paper.

Q5. Does the revised key mean I am selected?
No. The revised key lets you estimate your score after objections. Shortlisting and results are announced separately by VSSC.