ISRO VSSC Revised Answer Key 2026 Out, Check Response Sheet

ISRO VSSC Revised Answer Key 2026 Out – Technician-B, Draughtsman-B, Scientist/Engineer-SC & Other Posts CBT Response Sheet

ISRO VSSC Revised Answer Key 2026 in Simple Words

VSSC held a Computer-Based Test on 16 and 17 September 2026 for several posts. After the exam, VSSC first opened an objection portal on 23 September 2026, where candidates could check the answer key and challenge any answer they thought was wrong. On 29 October 2026, VSSC published a new notice called “Post Objection Management Portal”. This is why websites call it the “revised answer key”.

The update is available through a candidate login. You can use your VSSC Registration Number to enter the portal and see your response sheet and the answer-key information that is available there. The notice is on the VSSC Careers page at vssc.gov.in.

Please note: the source does not say which answers were changed or how many. So this page does not claim any specific change. Open your own login to see what is shown for your paper.

Click Here – ISRO VSSC Revised Answer Key and Response Sheet Login

What Is Confirmed and What Is Not Confirmed?

Note: Do not take any social media claim about “cut-off marks” or “selection” as true. Publication of the key is not the result.

Important Dates – ISRO VSSC CBT 2026

• CBT Schedule Notice: 4 September 2026
• Admit Card Download Notice: 12 September 2026
• Computer-Based Test: 16 and 17 September 2026
• Initial Objection Management Portal Notice: 23 September 2026
• Post-Objection Portal Update: 29 October 2026
• Reported Revised-Key Access Period: 29 October to 2 November 2026
• CBT Result: To be announced on the VSSC Careers page

Note: Today is 30 October 2026. If the reported access period is correct, only a few days are left. Log in now and save your response sheet.

Advertisement-Wise Posts

CBT Exam Date and Shift Details

Post Code Finder – Find Your Paper Quickly

Note: Post codes 1554 and 1558 are in 16 Sep Shift 1, 1556 and 1560 in Shift 2, 1557 and 1559 in Shift 3, and 1555 on 17 Sep Shift 1. The names of the engineering disciplines for each code are in the original advertisement.

How to Download ISRO VSSC Revised Answer Key 2026 – Step by Step

1. Open the VSSC recruitment page: vssc.gov.in/careers.html.
2. Find the notice “Post Objection Management Portal – CBT held on 16th and 17th September 2026”, dated 29 October 2026.
3. Open the candidate login portal linked in the notice.
4. Enter your VSSC Registration Number as the login ID.
5. Enter your password.
6. Complete any other verification that the portal shows.
7. Open the candidate response and answer-key section.
8. Compare the answers with the provisional key you saw earlier.
9. Save or print the available answer-key and response details for your record.

Note: Use only the official VSSC link or the login link given on this page. Do not enter your password on any other website.

Technician-B Revised Answer Key – What to Know

• Technician-B covers many ITI trades under Advertisement No. 334: Fitter, Machinist, Welder, Carpenter, Electrician, MMV / Mechanic Diesel, Electronic Mechanic, Turner, Photography, Electroplater and Mechanic Refrigeration and Air Conditioning.
• Each trade has its own post code, so check the answer key for your own trade and post code only.
• The answer key and your response sheet are available through the common candidate login.

Draughtsman-B and Scientist/Engineer-SC – What to Know

• Draughtsman-B (Mechanical) is Post Code 1542 and the exam was on 17 September 2026 in the first shift.
• Scientist/Engineer-SC is under Advertisement No. 336 and has several post codes, from 1554 to 1560. Verify your post code before checking.
• PGT (Computer Science) is Post Code 1561 under Advertisement No. 337.
• Light Vehicle Driver-A is Post Code 1527 under Advertisement No. 332.

How to Compare the Revised Key with Your Earlier Answers

• Keep your earlier response sheet or notes of the questions you challenged on 23 September 2026 onwards.
• Open the current post-objection information and look at the same question numbers.
• Note which questions show a different answer or a change in status, if the portal shows it.
• Mark the questions where the change helps you and where it does not.
• Do not assume a change only because you raised an objection. The portal information decides.
• Keep a screenshot or PDF of the page for your records.

How to Calculate Your Estimated Marks

You can estimate your score using your response sheet and the answer key. The basic formula is: Marks = (number of correct answers x marks per correct answer) minus (number of wrong answers x penalty per wrong answer). Unanswered questions normally give zero marks.

1. Step 1: Find your post code and question paper.
2. Step 2: Compare each of your responses with the answer key.
3. Step 3: Count correct, wrong and unanswered questions.
4. Step 4: Apply the official marking scheme given in your instructions for that post.
5. Step 5: Write down your estimated score and keep it as a rough guide only.

Note: The marks per question and negative marking rules for the VSSC posts are not given in the source, so this page does not assume any scheme. For reference only: another ISRO centre (SAC) used 1 mark per correct answer and about 1/3 negative marking for its Technician-B exam in 2026. This may not be the same at VSSC. Check your own exam instructions.

Example only (not VSSC rules): if a paper gives +1 for each correct answer and -0.33 for each wrong answer, and a candidate has 60 correct and 10 wrong, the score is 60 – (10 x 0.33) = 56.7 marks.

Can You Raise Objections Now?

• VSSC published an Objection Management Portal notice on 23 September 2026 for this CBT.
• The new notice of 29 October 2026 is about the post-objection portal.
• The source says a fresh objection window has not been confirmed from the public notice.
• So please follow only what your login portal shows. If there is an option to submit anything, use it before the closing date shown there.
• Do not trust social media posts that give a new objection date without showing it on the official portal.

ISRO VSSC Result 2026 – What to Expect

• The result date for this CBT is not given in the answer-key notice.
• Publication of the revised answer key does not mean the result is declared or that anyone is selected.
• Watch the VSSC Careers page for post-wise results, shortlisted candidates and later steps.
• The selection stages for each post are given in the original advertisements (Nos. 332, 334, 336 and 337). Read them again.
• Keep your registration number, password and admit card safe until the final selection is over.

Login or Page Not Opening? Easy Fixes

• Check that you are using the correct login link from the VSSC Careers page.
• Use your VSSC Registration Number, not another application number.
• If you forgot your password, use the option on the login page if it is available.
• Try Chrome or Firefox and clear the cache.
• If the site is slow, try early morning or late at night.
• Do not wait for the last day of the access period.

Common Mistakes to Avoid

• Waiting until the last day of access and missing the chance to save your response sheet.
• Checking the key of a wrong post code or trade.
• Believing that the revised key means the result is out.
• Assuming a marking scheme that is not in your exam instructions.
• Believing rumours about cut-off marks and selection lists.
• Sharing your login password with others.
• Not saving a copy of the answer key and response sheet.

Frequently Asked Questions (FAQs)

• Q1. Is the ISRO VSSC Revised Answer Key 2026 released?
  Yes. VSSC published the post-objection management portal update on 29 October 2026.
• Q2. Which exam is it for?
  The Computer-Based Test held on 16 and 17 September 2026.
• Q3. Which advertisements are covered?
  Advertisement Nos. 332, 334, 336 and 337.
• Q4. Which posts are covered?
  Technician-B, Draughtsman-B (Mechanical), Pharmacist-A, Scientist/Engineer-SC, Light Vehicle Driver-A and PGT (Computer Science).
• Q5. Where can I check the revised answer key?
  Through the candidate login portal linked from the VSSC Careers page, vssc.gov.in/careers.html.
• Q6. What is the login ID?
  Your VSSC Registration Number.
• Q7. Till when can I access it?
  It is reported to be available from 29 October to 2 November 2026. Please confirm on the official notice.
• Q8. Can I raise new objections?
  A fresh objection window has not been confirmed. Follow the instructions shown on the portal.
• Q9. Is the CBT result declared?
  No. The result date has not been announced in the answer-key notice.
• Q10. What are the marks per question and negative marking?
  They are not given in the source. Check the exam instructions for your post.

Source of Information

The post-objection update date, advertisement numbers, post codes, shift schedule, important dates, login details and the cautions about objections and result are taken from the FreeJobAlert report dated 30 October 2026, which is based on the notice on the VSSC Careers page. We could not find another independent report of the exact answer-key changes, the marking scheme or a new objection window. The SAC marking example is from a Physics Wallah report on another ISRO centre and is for understanding only. The comparison tips, formula and fix lists are written for this page. Please confirm everything on vssc.gov.in.

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