The Space Applications Centre (SAC), Indian Space Research Organisation (ISRO), Ahmedabad conducted the Computer-Based Test (CBT) for Scientist/Engineer SC and SD posts under Advertisement No. SAC:01:2026 on 30 July 2026. The provisional answer key for the Scientist/Engineer written examination is expected to be released on the official SAC website sac.gov.in. As of 08 August 2026, the Scientist/Engineer answer key has not been officially confirmed as released at sac.gov.in – candidates must check the official portal directly for the current status and the active download link. The recruitment was for 49 vacancies of Scientist/Engineer SC (45 posts) and Scientist/Engineer SD (4 posts) across multiple technical disciplines. Applications were accepted from 23 January 2026 to 12 February 2026. Once released, the answer key and individual response sheet will be accessible through candidate login on the official SAC recruitment portal.
Important Note: Three things every ISRO SAC Scientist/Engineer candidate must know right now. First, the Scientist/Engineer answer key has not been officially confirmed as released as on 08 August 2026 – only the official website sac.gov.in is the authoritative source for the answer key link; do not rely on any unofficial link or social media post claiming to have the key until it is live at the official portal. Second, once released, the answer key will be provisional – there will be an objection window during which you can challenge specific answers with supporting documentary evidence; the objection window dates and procedure will be specified in the official notice accompanying the answer key, so read that notice carefully before submitting any challenge. Third, the answer key and response sheet are typically accessible only through candidate login using your Registration Number and Password or Date of Birth – keep these credentials ready so you can access your response sheet immediately once the link goes live.
ISRO SAC Scientist/Engineer Answer Key 2026 – Overview
| Particulars | Details |
|---|---|
| Organisation | Space Applications Centre (SAC), ISRO, Ahmedabad |
| Advertisement No. | SAC:01:2026 |
| Posts | Scientist/Engineer SC and Scientist/Engineer SD |
| Total Vacancies | 49 (SC – 45 posts, SD – 4 posts) |
| Exam Type | Computer-Based Test (CBT) |
| CBT Date | 30 July 2026 |
| Answer Key Type | Provisional (to be confirmed) |
| Answer Key Status (as on 08 August 2026) | Awaiting official release at sac.gov.in |
| Objection Window | To be notified along with the answer key |
| Official Website | sac.gov.in |
Important Dates
| Event | Date |
|---|---|
| Online Application Opens | 23 January 2026 |
| Online Application Closes | 12 February 2026 |
| Computer-Based Test (CBT) | 30 July 2026 |
| Provisional Answer Key | Expected at sac.gov.in – check official portal |
| Objection Window | To be notified with the answer key |
| Final Answer Key | To be notified after objection review |
| Result | To be notified at sac.gov.in |
Vacancy Details – Post and Discipline-wise
| Post | Level | Total Posts | Category |
|---|---|---|---|
| Scientist/Engineer SC | Level-10 (Rs. 56,100-1,77,500) | 45 | UR |
| Scientist/Engineer SD | Level-11 (as per Government norms) | 04 | UR |
| Total | 49 |
All 49 vacancies are in the Unreserved (UR) category. Disciplines covered include RF and Microwave, Electronics, Communication, Remote Sensing, Civil Engineering, and other relevant engineering and science domains across multiple Post Codes (01 to 16). Candidates are liable to be posted at SAC Ahmedabad or any ISRO Centre/Unit anywhere in India as per organisational requirement.
Exam Pattern for Reference
| Component | Details |
|---|---|
| Exam Mode | Computer-Based Test (CBT) |
| Paper Type | Discipline-specific technical questions |
| Login Credentials for Answer Key | Registration Number + Password or Date of Birth |
The detailed exam pattern, marking scheme, and number of questions are as specified in the official recruitment notification (SAC:01:2026) available at sac.gov.in. Use the official marking scheme when estimating your score from the answer key.
What the ISRO SAC Scientist/Engineer Answer Key will Contain
| What the Answer Key will CONTAIN | What it will NOT Contain |
|---|---|
| Official answers to all CBT questions (question-number and answer option) | Individual scores or result status |
| Individual response sheet showing your marked answers (via candidate login) | Merit list or cut-off marks |
| Access to the objection submission facility with deadline | Final appointment confirmation |
How to Check and Download ISRO SAC Scientist/Engineer Answer Key 2026
- Visit the official SAC website – Click Here
- Go to the Careers or Recruitment section of the website.
- Look for the notice or link related to “Scientist/Engineer Answer Key 2026” or “Advertisement No. SAC:01:2026 – Answer Key.”
- Click on the answer key/response sheet link once it is activated.
- Log in using your Registration Number and Password or Registration Number and Date of Birth as prompted.
- Your individual response sheet showing your marked answers will be displayed alongside the official answer key.
- Compare your responses carefully with the official answers question by question.
- Download and save the answer key and your response sheet for reference.
- If you believe any answer is incorrect, note the question number and prepare supporting evidence before the objection window opens.
How to Raise Objections Against the ISRO SAC Answer Key 2026
Once the provisional answer key is released and the objection window is open:
- Log in to the official SAC recruitment portal at sac.gov.in with your Registration Number and Password/Date of Birth.
- Navigate to the objection/challenge facility for the Scientist/Engineer answer key.
- Select the specific question number(s) you wish to challenge.
- Upload supporting documentary evidence – typically from standard textbooks, official publications, or authoritative reference material.
- Submit the objection within the deadline specified in the official notice. Objections submitted after the closing time will not be considered.
- Wait for SAC’s expert committee to review all objections and release the Final Answer Key.
The objection window dates, fee (if any), and supporting document format will be specified in the official notice released along with the provisional answer key at sac.gov.in.
What Happens After the Answer Key – Pipeline
| Stage | Status |
|---|---|
| Computer-Based Test (CBT) | Held 30 July 2026 |
| Provisional Answer Key + Response Sheet | Expected at sac.gov.in – not yet confirmed as of 08 August 2026 |
| Objection Window | To be notified with the answer key |
| Final Answer Key | After objection review period closes |
| Result | To be announced at sac.gov.in |
| Further Selection (Interview/Document Verification) | As per SAC:01:2026 notification |
Important Instructions
- Check only sac.gov.in for the answer key – do not use any unofficial link or third-party website claiming to have the answer key.
- The answer key and response sheet are typically accessible only through candidate login – keep your Registration Number and Password/Date of Birth ready.
- Submit objections only with strong supporting evidence – frivolous or unsupported objections may be rejected without review.
- Do not miss the objection window deadline – late submissions will not be accepted under any circumstances.
- Marks are calculated based on the Final Answer Key only, not the provisional one; do not treat provisional answers as definitive.
- The exact marking scheme (marks per correct answer, negative marking for wrong answers) is as specified in the SAC:01:2026 notification – use those rules when estimating your score.
- Monitor sac.gov.in regularly for the answer key activation link, objection window dates, final answer key, and result.
Important Links
| Description | Link |
|---|---|
| ISRO SAC Scientist/Engineer Answer Key 2026 (active once released) | Click Here |
| ISRO SAC Official Website – Careers/Recruitment Section | Click Here |
ISRO SAC Scientist/Engineer Answer Key 2026 – FAQs
Q1. Has the ISRO SAC Scientist/Engineer Answer Key 2026 been released?
✅ As of 08 August 2026, the provisional answer key for the ISRO SAC Scientist/Engineer SC and SD CBT (held 30 July 2026) has not been officially confirmed as released at the official SAC website sac.gov.in. Candidates must monitor the official portal directly for the answer key activation link.
Q2. When was the ISRO SAC Scientist/Engineer exam held?
✅ The Computer-Based Test (CBT) for Scientist/Engineer SC and SD posts under Advertisement No. SAC:01:2026 was held on 30 July 2026.
Q3. What is Advertisement No. SAC:01:2026?
✅ It is the official recruitment notification released by the Space Applications Centre (SAC), ISRO, Ahmedabad for 49 vacancies of Scientist/Engineer SC (45 posts) and Scientist/Engineer SD (4 posts) in various technical disciplines including RF and Microwave, Electronics, Communication, Remote Sensing, and Civil Engineering. All 49 vacancies are in the Unreserved (UR) category.
Q4. Where can I download the ISRO SAC Scientist/Engineer Answer Key 2026?
✅ The answer key will be available at the official SAC website sac.gov.in under the Careers/Recruitment section, once released. Access requires login with your Registration Number and Password or Date of Birth. Do not download from any unofficial source.
Q5. What credentials do I need to access the ISRO SAC answer key?
✅ The answer key and individual response sheet are typically accessible through candidate login using your Registration Number and Password, or Registration Number and Date of Birth, as prompted on the official SAC portal. Keep these details ready.
Q6. Can I raise objections against the ISRO SAC Answer Key 2026?
✅ Yes, once the provisional answer key is released, SAC will provide an online objection window during which candidates can challenge specific answers by submitting supporting documentary evidence. The objection window dates, procedure, and any applicable fee will be specified in the official notice released along with the answer key at sac.gov.in.
Q7. What is the pay scale for ISRO SAC Scientist/Engineer posts?
✅ Scientist/Engineer SC carries Level-10 of the 7th CPC Pay Matrix (Rs. 56,100-1,77,500) per month. Scientist/Engineer SD carries Level-11 as per Government norms. Both posts carry DA, HRA, and other allowances as per central government rules. Selected candidates may be posted at SAC Ahmedabad or any ISRO Centre/Unit anywhere in India.
Q8. What is the difference between Scientist/Engineer SC and SD?
✅ Scientist/Engineer SC (45 posts) is primarily for candidates with BE/B.Tech and ME/M.Tech or M.Sc in relevant disciplines. Scientist/Engineer SD (4 posts) is a higher-level research-intensive role requiring a PhD in the relevant field in addition to the prescribed engineering qualifications. The SD post carries a higher pay level (Level-11) than SC (Level-10).
Q9. How is the final score calculated from the ISRO SAC answer key?
✅ The final score is calculated based on the Final Answer Key (not the provisional one) using the marking scheme specified in the original SAC:01:2026 notification – typically awarding a fixed mark for each correct answer and deducting a fraction for each wrong answer. Verify the exact marking scheme from the official notification at sac.gov.in before calculating your estimated score.
Q10. When will the ISRO SAC Scientist/Engineer result 2026 be declared?
✅ The result date has not yet been announced. After the provisional answer key objection window closes and the final answer key is released, SAC will declare the result and notify further selection stages (if any). All updates will be published on the official website sac.gov.in.
Disclaimer
The information above is compiled based on the official ISRO SAC Scientist/Engineer Recruitment 2026 notification (Advertisement No. SAC:01:2026) and publicly available information regarding the CBT held on 30 July 2026, as pertaining to the Space Applications Centre (SAC), ISRO, Ahmedabad. As of 08 August 2026, the provisional answer key for the Scientist/Engineer exam has not been confirmed as released on the official SAC website. Candidates must verify the current status and download the answer key only from the official SAC website sac.gov.in. All links above lead only to the official SAC website.
