CSIR NET December 2025 Answer Key Released: Download Link & Objection Process

The National Testing Agency (NTA) has officially published the provisional Joint CSIR UGC NET December 2025 Answer Key along with the candidate response sheets. Over 212,552 aspirants appeared for the computer-based test (CBT) held nationwide on 18th December 2025. Candidates seeking positions such as Junior Research Fellowship (JRF), Lectureship/Assistant Professor, and Ph.D. admissions can now verify their responses, estimate their scores, and file challenges if they find discrepancies.

CSIR NET December Answer Key 2025 Highlights

Review the essential facts and parameters concerning the recently released answer key:

• Conducting Body: National Testing Agency (NTA)
• Exam Name: CSIR UGC NET December 2025
• Post Name: Junior Fellowship (JRF), Lectureship/Assistant Professor, and Ph.D.
• Mode of Answer Key: Online
• Answer Key Release Date: 30th December 2025
• Raise Objections: 30th December 2025 to 1st January 2026 (11 pm)
• Exam Date: 18th December 2025
• Official Website: www.csirnet.nta.ac.in

Steps to download the CSIR NET Answer Key 2025

Follow these structured steps to access and download your response sheet and answer key:

1. Visit the official website of the National Testing Agency (NTA) at www.csirnet.nta.nic.in.
2. On the homepage, look for the “Latest News” section.
3. Candidates find a link to download the “Joint CSIR NET December 2025 – Click Here to Answer Key Challenge.” Click on that link.
4. Candidates are redirected to a new page. Here, candidates need to log in by entering their application number and date of birth.
5. Enter the Security Pin as shown in the image and click on the Submit tab.
6. After successfully logging in, the answer key appears on the screen.
7. Download the answer key and calculate your estimated score.

Steps to Raise Objections to CSIR NET December Answer Key 2025

If you spot discrepancies in the official answer key, you can submit an online challenge by adhering to the procedure below:

1. Go to the official website National Testing Agency (NTA) at https://csirnet.nta.ac.in.
2. Click on the link that reads “Joint CSIR UGC NET Answer Key Challenge Open Click Here.”
3. A new login page appears on the screen. Enter your Application Number and Password, enter your Security PIN as displayed, then click on the submit button.
4. Click on “View Question Paper” for marked responses and to view or challenge the Answer keys. Click on the link “Click to view /Challenge Answer Key”.
5. You will see Question IDs in sequential order.
6. The ID next to the question under the column ‘Correct Option(s)’ stands for the correct Answer Key to be used by NTA.
7. If candidates want to challenge this option, they may use any one or more of the Option IDs given in the next four columns by clicking the check box.
8. After clicking your desired option, scroll down, ‘Save your Claims’ and move to next screen.
9. You will see a display of all the Option IDs you have challenged.
10. You may want to upload supporting documents in which you can select ‘Choose File’ and upload (all documents are to be put in a single PDF file only).
11. Click on ‘Save your Claims and pay fee’ or in case to modify the claims, click on ‘Modify your Claims’.
12. After saving the claims, you will find a screen displaying your challenges.
13. Kindly pay the fee by clicking on ‘Pay Fee’. The claims will be saved finally after successful payment of a required fee.
14. Select Mode of Payment and Pay a non-refundable processing fee of Rs. 200/- for each question challenged.

CSIR NET Marking Scheme & Subject-Wise Details

Calculating your score accurately requires understanding the subject-wise weightage and negative marking criteria. Generally, a deduction of 25% of allotted marks applies to incorrect answers across all parts.

CSIR NET December Answer Key 2025 Highlight

CSIR NET December Answer Key 2025 Highlight	CSIR NET December Answer Key 2025 Highlight
Conducting Body	National Testing Agency (NTA)
Exam Name	CSIR UGC NET December 2025
Post Name	Junior Fellowship (JRF), Lectureship/Assistant Professor, and Ph.D.
Mode of Answer Key	Online
Answer Key Release Date	30th December 2025
Raise Objections	30th December 2025 to 1st January 2026 (11 pm)
Exam Date	18th December 2025
Marking Scheme	Each correct answer in Part A and Part B is awarded 2 marks, while in Part C, correct answers are awarded 4 marks. There is negative marking for incorrect answers in all parts, with a deduction of 25% of the allotted marks for each wrong answer.
Official Website	www.csirnet.nta.ac.in

Subjects and Parts	Marks Allotted For Each Question	Negative Marking
Chemical Science	Chemical Science	Chemical Science
A	+ 2	– 0.5
B	+ 2	– 0.5
C	+ 4	– 1
Earth Science	Earth Science	Earth Science
A	+ 2	– 0.5
B	+ 2	– 0.5
C	+ 4	– 1.32
Life Science	Life Science	Life Science
A	+ 2	– 0.5
B	+ 2	– 0.5
C	+ 4	– 1
Mathematical Science	Mathematical Science	Mathematical Science
A	+ 2	– 0.5
B	+ 3	– 0.75
C	+ 4.75	0
Physical Science	Physical Science	Physical Science
A	+ 2	– 0.5
B	+ 3.5	– 0.875
C	+ 5	– 1.75

Next Steps After Answer Key Verification

Once you have calculated your tentative score, you should prepare for the subsequent stages of the recruitment and admission cycle. Keep track of further announcements by checking the official portals and reviewing related preparation resources:

• View CSIR NET Result 2026 - Check Status Here
• Review CSIR UGC NET Syllabus 2025 & Exam Pattern
• Detailed CSIR NET Exam Pattern 2025 - Click to View

Frequently Asked Questions (FAQs)

When was the CSIR NET December 2025 Answer Key released?

The official CSIR NET Answer Key 2025 was released by the National Testing Agency (NTA) on 30th December 2025.

How can I raise objections against the provisional CSIR NET Answer Key?

Candidates can submit challenges online via the official website www.csirnet.nta.ac.in by logging in with their credentials, selecting the questioned items, uploading supporting documents in a single PDF, and paying a non-refundable fee of Rs. 200 per question.

What is the deadline to submit challenges for the CSIR NET December 2025 exam?

Candidates can raise objections from 30th December 2025 until 1st January 2026 up to 11:00 PM.

What is the general marking scheme for the CSIR NET examination?

Generally, Part A and Part B correct answers are awarded 2 marks, while Part C awards 4 marks (with specific variations per subject like Mathematical and Physical sciences). There is a 25% negative marking deduction for incorrect answers across all parts.

Where can I check my final results after the answer key process?

You can check your status and updates via the View CSIR NET Result 2026 - Check Status Here page.