
CSIR NET December 2025 Answer Key: The National Testing Agency (NTA) will soon release the CSIR NET Answer Key 2025 for the December session on its official website. The Joint CSIR-UGC NET examination was conducted on December 18, 2025, across multiple test centres in India. The first shift, held from 9:00 AM to 12:00 Noon, was for Life Sciences, while the second shift, from 3:00 PM to 6:00 PM covered Chemical Sciences, Mathematical Sciences, and Physical Sciences.
Once released, candidates can log in to the official NTA portal to download the CSIR NET Final Answer Key 2025. Using the final key, aspirants can verify their answers and estimate their expected scores. As this is the final version, the CSIR NET 2025 result will be prepared solely based on this answer key.
Candidates who appeared for CSIR NET 2025 will be able to check the answer key for the December session after its release. The final answer key helps candidates verify their recorded responses and get a clear idea of their performance before the official result announcement. Below is a quick overview of the CSIR NET 2025 answer key details:
CSIR NET Answer Key 2025 Overview
| Particulars | Details |
| Exam Name | CSIR NET 2025 |
| Conducting Body | National Testing Agency (NTA) |
| Exam Date | December 18, 2025 (Shift 1 & 2) |
| Exam Mode | CBT (Computer-Based Test) |
| Provisional Answer Key | To be announced |
| Final Answer Key | To be announced |
| Official Website | csirnet.nta.ac.in |
Note: Candidates are advised to regularly visit the official NTA CSIR NET portal for the latest updates on the answer key and response sheet.
The CSIR NET Life Sciences Answer Key 2025 will be released in PDF format after evaluation of objections, if any. Candidates who appeared in the Life Sciences paper can download the final answer key to check their responses and calculate expected scores.
Download Link: (To be activated soon)
The final answer key for Chemical Sciences will be published by NTA on the official website. It will contain the correct responses for all questions asked in the exam conducted in the second shift.
Download Link: (To be activated soon)
Candidates who appeared for the Physical Sciences paper can download the CSIR NET Physical Sciences Answer Key 2025 once released. The PDF will help aspirants cross-verify their answers before the result declaration.
Download Link: (To be activated soon)
The Mathematical Sciences answer key will be released separately in PDF format. Candidates can use it to match their responses and estimate their final scores accurately.
Download Link: (To be activated soon)
The CSIR NET Earth Sciences Answer Key 2025 will include correct answers to all exam questions. It will be available for download on the official website once released by NTA.
Download Link: (To be activated soon)
Candidates can follow these steps to download the CSIR NET 2025 Final Answer Key:
Visit the official website at csirnet.nta.ac.in
Click on the link for “CSIR NET December 2025 Final Answer Key”
The answer key PDF will appear on the screen
Download and save the PDF for future reference
NTA will also release the CSIR NET 2025 response sheet along with the answer key. The response sheet contains the answers marked by the candidate during the exam. It is essential for verifying responses and calculating expected scores.
To access the CSIR NET Response Sheet 2025, candidates must log in using their application number and date of birth or password. The response sheet is crucial for candidates planning to raise objections against the provisional answer key.
Note: NTA officially refers to the response sheet as the “recorded responses of candidates.”
Candidates will be allowed to challenge the provisional answer key through the official objection window opened by NTA.
Key Points:
Objection window is usually open for 2–3 days
Valid proof/documents are mandatory for each challenge
A non-refundable fee of ₹200 per question may be applicable
Only objections submitted within the deadline will be considered
After reviewing all challenges, NTA will publish the CSIR NET Final Answer Key, based on which the result will be declared.
Objection Raising Timeline (Reference)
| Particulars | Details |
| Examination | Joint CSIR-UGC NET Exam |
| Objection Window | To be announced |
| Last Date for Payment | To be announced |
| Mode of Payment | Credit Card / Debit Card / Net Banking / UPI |
Candidates can estimate their scores using the official marking scheme:
Estimating Scores with CSIR NET Answer Key
| Response Type | Marks Awarded |
| Correct Answer | +2 marks |
| Incorrect Answer | No negative marking |
| Unattempted Question | 0 mark |
Estimated Score Formula:
Estimated Score = Number of Correct Answers × 2
Candidates should cross-check all responses using the official answer key and their response sheet for accurate score calculation.