CSIR NET 2025 answer key has been released by the National Testing Agency on its official website. The provisional answer key is available for the December 2025 session examination. The CSIR NET 2025 exam was conducted on December 18, 2025, for all notified subjects.
Along with the answer key, NTA has also opened the objection window. Candidates can challenge the provisional answers till January 1, 2026, up to 11.00 PM, by paying a non-refundable fee of INR 200 per question.
CSIR NET 2025 Answer Key Subject-Wise Details
The answer key for CSIR NET December 2025 has been released separately for each subject. Candidates must download the answer key related to their respective subject paper to verify responses accurately. The CSIR NET 2025 answer key is available for the following subjects:
- Chemical Sciences
- Earth Sciences
- Life Sciences
- Mathematical Sciences
- Physical Sciences
Along with the provisional answer key, candidates can also access their recorded responses and question papers through the login dashboard.
CSIR NET 2025 Objection Window and Fee
NTA has provided an opportunity for candidates to raise objections against incorrect or disputed answers. The objection facility is available only through online mode within the prescribed timeline. Candidates must note the key objection-related details given below.
- Objection window closes on January 1, 2026, at 11.00 PM
- Objection fee is INR 200 per question
- The fee is non-refundable
- Objections without payment will not be accepted
All challenges submitted by candidates will be reviewed by subject experts. Based on the evaluation, NTA will release the final answer key. The CSIR NET 2025 result will be prepared and declared on the basis of the final answer key only.
How to Download CSIR NET 2025 Answer Key?
Candidates can follow the steps given below to download the CSIR NET 2025 provisional answer key and response sheet. The answer key can be accessed only through candidate login. The step-by-step process is outlined below.
- Visit the official website: csirnet.nta.nic.in
- Click on the link for “Provisional Answer Key – CSIR NET December 2025”
- A login page will appear on the screen
- Enter the application number and password or date of birth
- Submit the login details
- View the answer key and response sheet
- Download and save the answer key for reference
What Happens After CSIR NET 2025 Answer Key Review?
Once the objection window closes, NTA will scrutinise all the challenges received from candidates. If any answer is found to be incorrect, it will be revised in the final answer key.
The CSIR NET 2025 final answer key and result will be released after the completion of the review process. No further challenges will be allowed after the final answer key is published. Candidates are advised to raise objections carefully within the given deadline and keep a copy of the confirmation page for future reference.
