CSIR NET Answer Key 2025 SOON: December Subject-Wise Answer Key Download Link

Council of Scientific and Industrial Research National Eligibility Test 2025 ( CSIR NET )

Shikha Goyal
Updated on Dec 26, 2025 13:20 IST

By Shikha Goyal, Assistant Manager

CSIR NET Answer Key 2025: The authority will release the CSIR NET Answer key 2025 for the December session Soon at csirnet.nta.nic.in. Those candidates who appeared in the exam, will be able to check their answer key by visiting the official website. A direct link to download the answer key will also be provided here once it is released.

The Provisional Answer Key will be released along with the question paper and marked responses. The CSIR NET answer key 2025 challenge window will also be opened for a limited time duration. After analysing the representations of the candidates, the CSIR UGC NET final answer key will be released. The answer key will be released in two phases- Provisional and Final. After releasing the final answer key, the CSIR NET Result & Cut-off will also be released for Dec cycle by NTA on the official website. Scroll down for more details.

Table of contents
  • How to Download CSIR NET Answer Key 2025?
  • CSIR NET Exam Dates 2025
  • How to Challenge CSIR NET Answer Key 2025?
  • Details Mentioned on CSIR NET Answer Key 2025
  • How to Calculate Scores using CSIR NET Answer Key 2025?
  • CSIR UGC NET Final Answer Key 2025
  • How to Download CSIR NET Dec 2025 Final Answer Key?
  • CSIR NET Answer Key 2025 FAQs
View More
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How to Download CSIR NET Answer Key 2025?

Once the provisional answer key is released, candidates will be able to download it for the December session and raise their objections, if any, in an online mode. Candidates will be able to check their answer key by using their login credentials. Check below the methods to download the Provisional Answer Key for the CSIR NET exam.
  • Visit at csirnet.nta.nic.in
  • Go to the link given
  • A new login window will appear
  • Enter the login details, which include your application number and date of birth/password
  • The answer key will be shown
  • Save it to your device for future use

Read More:

CSIR NET Syllabus in Detail

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Commonly asked questions
Q:   What is the date for CSIR NET Dec 2025 exam?
A: 

The December session exam of CSIR NET 2025 was conducted on December 18 in two shifts. The whole exam schedule was released by the authority. It was released at csirnet.nta.nic.in. 

Q:   Is the CSIR NET 2025 Dec Provisional Answer Key released?
A: 

No. The NTA is expected to soon release the CSIR NET 2025 Provisional Answer Key for the December session. Candidates will be able to download it by visiting the official portal or via a direct link provided on this page. They required login credentials to check the answer key.

CSIR NET Exam Dates 2025

Take a look at the table below for the complete schedule of CSIR NET 2025 exam

DatesUpcoming Exam Dates
Dec ' 25

CSIR NET 2025 Dec Provisional Answer Key

TENTATIVE
DatesPast Exam Dates
20 Aug ' 25

CSIR NET 2025 June Result

01 Aug ' 25

CSIR NET 2025 June Provisional Answer Key

01 Aug ' 25 - 03 Aug ' 25

CSIR NET 2025 June Provisional Answer Key challenge window

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How to Challenge CSIR NET Answer Key 2025?

In case, any candidate is not satisfied with the given answer for any question, s/he can challenge it. However, it may be noted that for each challenged question/answer, candidates have to pay a fee of INR 200 in online mode. Candidates can follow the methods mentioned below to challenge the answer key:

  • Visit at csirnet.nta.nic.in
  • Click on the answer key link
  • Enter the application number, password/date of birth and security pin
  • Click on the Sign In button
  • Click on the link available to challenge the answer key
  • Select the correct answer option ID for the question ID for which the challenge needs to be made
  • Click on the 'Save Your Claims' button
  • Upload the document that supports the claimed answer
  • Click on ‘Save Your Claims & Pay Fee’ button
  • Pay INR 200 per question in online mode via credit card/debit card/internet banking
  • If any question is found to be incorrect, the benefit of marks will be given to candidates who attempted that question
  • In case, it is found that along with the original answer key one more option is correct, the benefit of marks will be given to candidates who attempted any one of the correct options

As per the notification released, the processing fee may be paid using Debit/Credit Card/Net Banking. No challenge will be entertained without receipt of the processing fee. The fee towards the challenge will not be accepted through any other mode.

Q&A Icon
Commonly asked questions
Q:   What are CSIR NET subjects?
A: 

The CSIR NET exam consists of five subjects some of them are Maths, Physical Science, Chemical Science, etc. Part A in the exam is common for all candidates and Part B and C is subject-specific. Candidates need to select one subject and prepare well to clear the examination.

Q:   What is the objection fee for CSIR NET 2025 Answer Key?
A: 

The authority will release the CSIR NET 2025 provisional answer key for the December Session on the official website. Candidates can also challenge the answer key, and based on the objections received, the NTA will release the final answer key. Candidates need to pay INR 200 per question as an objection fee. This fee is non-refundable.

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Details Mentioned on CSIR NET Answer Key 2025

The CSI NET answer key will be released separately for each subject. The final answer key will be released after considering objections against the provisional answer key. CSIR NET exam December answer key consists of correct answers for all the questions asked in the exam. It contains the following details.

Exam name

Exam date

Exam shift

Exam subject name

Exam subject code

Question IDs

Correct option IDs

-

Also Read: CSIR NET Cut Off

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Commonly asked questions
Q:   Is CSIR NET 2025 Final Answer Key released?
A: 

No. The CSIR NET Final Answer Key for the December Session will be at csirnet.nta.ac.in. It will be announced after analysing the representations of the candidates. A direct link will also be provided on this page once it is released.

Q:   What is the full form of CSIR NET?
A: 

The CSIR NET stands for the Council of Scientific and Industrial Research National Eligibility Test. It determines the eligibility of Indian nationals for the 'award of Junior Research Fellowship and appointment as Assistant Professor.' Also, appointment as 'Assistant Professor and admission to Ph.D.' and 'admission to Ph.D. only' in several Indian universities and colleges.

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How to Calculate Scores using CSIR NET Answer Key 2025?

The CSIR NET exam is conducted twice in a year. Candidates are advised to check all CSIR UGC NET answers given in the key carefully and calculate the scores correctly. 

Chemical Sciences Scores

Candidates can calculate it through the answer key in the following manner.

CSIR NET Chemical Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+2

-0.5

C

+4

-1

Earth, Atmospheric, Ocean and Planetary Sciences scores

Candidates can calculate it in the following manner.

CSIR NET Earth Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+2

-0.5

C

+4

-1.32

Life Sciences Scores

Candidates can calculate it through the answer key in the following manner.

CSIR NET Life Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+2

-0.5

C

+4

-1

Mathematical Sciences Scores

Candidates can calculate it in the following manner.

CSIR NET Mathematical Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+3

-0.75

C

+4.75

0

Physical Sciences scores

Candidates can calculate it in the following manner.

CSIR NET Physical Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+3.5

-0.875

C

+5

-1.25

Also Read: CSIR UGC NET Exam Pattern 

Q&A Icon
Commonly asked questions
Q:   Can I clear CSIR NET in 3 months?
A: 

Yes. Candidates clear the CSIR UGC NET exam in three months. But to pass the exam proper strategy is required. They make study plans, do revisions, solve question papers, practice tests, etc. If a candidate study properly then nothing is impossible to crack. 

 

Q:   What is the marking scheme of CSIR NET Chemical Science subject?
A: 

Candidates can calculate the CSIR NET Chemical Sciences scores through the answer key in the following manner.

CSIR NET Chemical Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+2

-0.5

C

+4

-1

CSIR NET Logo

CSIR UGC NET Final Answer Key 2025

DeskCalendarAnswer Key: Dec ' 25

The NTA will release the CSIR NET 2025 Dec session Final Answer key at csirnet.nta.nic.in. Candidates will be able to download the Final Answer key PDF below. The CSIR UGC NET Answer Key for the Dec session will be released in a PDF format and candidates can download the CSIR NET Answer Key PDF through the link provided below in this article once it is released.

Candidates who will not be satisfied with the answers mentioned in the provisional answer key raised objections about the answer key against in a particular time frame. Candidates need to pay INR 200 per question to submit their objections against the CSIR NET Answer Key 2025. The CSIR NET answer key will be released in two phases - Provisional and Final. The CSIR NET Provisional Answer Key 2025 will be released along with the question paper and marked responses. After analysing the representations of the candidates, the NTA will release the CSIR NET final answer key. 

Check CSIR NET 2025 Dec Final Answer Key PDF: to be updated here

 

 

 

Q&A Icon
Commonly asked questions
Q:   Where will the CSIR NET final answer key be released?
A: 

The CSIR NET 2025 final answer key will be released on the official website at csirnet.nta.nic.in. After analysing the representations of the aspirants, the NTA will release the CSIR UGC NET final answer key for the Dec session. The answer key will be released in two phases- Provisional and Final. 

Q:   What information is provided on the CSIR NET answer key?
A: 

The authority will release the CSIR NET answer key at csirnet.nta.nic.in. It contains correct answers for all the questions asked in the exam. Check below for more details:

Exam name

Exam date

Exam shift

Exam subject name

Exam subject code

Question IDs

Correct option IDs

-

View answer key
CSIR NET Logo

How to Download CSIR NET Dec 2025 Final Answer Key?

CSIR NET 2025 final answer key pdf will be available for download at csirnet.nta.nic.in. Candidates can download CSIR NET 2025 final answer key pdf for all subjects online by following manner:

  • Visit at csirnet.nta.ac.in
  • On the homepage, click on the CSIR December 2025 Final Answer Key
  • A PDF file with correct responses will be displayed on the screen
  • Download pdf, check answers and save it for further references

Direct link to check CSIR NET 2025 Dec Final Answer Key: to be updated here

Q&A Icon
Commonly asked questions
Q:   Which books are useful for life science preparation?
A: 

Candidates can check below the list of Life Science books that will help in the preparation:

  • Life Science by Ashish Nagesh, Quaisher J. Hossain
  • Life Sciences Books (Vol 1) by Dr. Poonam Sharma
  • Plant Physiology by Taiz and Zeiger
  • CSIR UGC NET Life Sciences by Trueman’s Publication
  • Microbiology by Prescott
  • Life Sciences Fundamentals and Practice Part 1 & 2 by Pranav Kumar
  • Fundamentals of Life Sciences Volume  I and Volume II by Rupendra Singh
Q:   What are the topics to revise in the CSIR NET Chemical Science?
A: 

Some of the topics that a candidate can revise in the CSIR NET Chemical Science subject:

Organic Reactive Intermediates: Carbocation, Carbanions, Free Radicals, Benzynes
Stereochemistry: Stereogenicity, Stereoselectivity, Enantioselectivity
Organic Reaction Mechanisms 
Pericyclic Reactions
Structure Determination of Organic Compounds
Asymmetric Synthesis, Determination of Enantiomeric and Diastereomeric Excess
IUPAC Nomenclature
Concepts in Organic Synthesis
Chemistry of Natural Products, etc.

CSIR NET Logo

CSIR NET Answer Key 2025 FAQs

Candidates can read the CSIR NET Answer Key 2025 FAQs below.

Q&A Icon
Commonly asked questions
Q:   What are CSIR NET subjects?
A: 

The CSIR NET exam consists of five subjects some of them are Maths, Physical Science, Chemical Science, etc. Part A in the exam is common for all candidates and Part B and C is subject-specific. Candidates need to select one subject and prepare well to clear the examination.

Q:   Is the CSIR NET 2025 notification for December session released?
A: 

Yes. The CSIR NET is a prestigious examination conducted by the National Testing Agency twice a year. The CSIR NET 2025 notification for the Dec session was released at csirnet.nta.nic.in. 

Q:   Can a candidate apply for more than one subject in the CSIR NET 2025 exam?
A: 

No, a candidate cannot apply for more than one subject in the CSIR NET exam. Candidates can only apply for one subject as per the exam cycle.

Q:   Should a candidate rely on books or online resources for CSIR NET Preparation 2025?
A: 

Candidates should follow a balanced approach. No doubt books help in conceptual clarity, and a candidate can study in detail. On the other hand, online platforms provide lectures through video, have updated notes, cover current affairs as well, etc. 

Q:   Can I clear CSIR NET in 3 months?
A: 

Yes. Candidates clear the CSIR UGC NET exam in three months. But to pass the exam proper strategy is required. They make study plans, do revisions, solve question papers, practice tests, etc. If a candidate study properly then nothing is impossible to crack. 

 

Q:   What is the upper age limit to apply for the CSIR NET exam?
A: 

As per the information bulletin, the upper age limit for the CSIR NET exam should not be more than 30 years as on the first day of the month in which the examination is concluded. A relaxation of upto 5 years is provided to the candidates belonging to OBC-NCL (as per the Central list of OBC) /SC/ST/PwD/PwBD/Third gender categories and to women applicants.

Q:   What information is provided on the CSIR NET answer key?
A: 

The authority will release the CSIR NET answer key at csirnet.nta.nic.in. It contains correct answers for all the questions asked in the exam. Check below for more details:

Exam name

Exam date

Exam shift

Exam subject name

Exam subject code

Question IDs

Correct option IDs

-

Q:   What is the valid period of the qualifying certificate of Assistant Professor?
A: 

As per the information bulletin, there is no end period for the validity of the qualifying certificate of Assistant Professor. 

Q:   Where can a candidate enroll for availing CSIR Fellowship or Associateships?
A: 

Officially it is mentioned that CSIR Fellowships or Associateships are tenable in universities, IITs, postgraduate colleges, government research establishments including those of CSIR, R&D establishments of recognised public or private sector industrial firms, and other recognised institutions.

Q:   What is the validity of the CSIR NET 2025 certificate?
A: 

The CSIR NET 2025 certificate is valid for lifetime for Assistant Professor. On the other hand, the award of JRF is for a fixed tenure and does not imply an assurance or guarantee for subsequent employment. The CSIR NET JRF certificate is valid for two years from the date mentioned on the certificate. 

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CSIR NET Exam

Student Forum

chatAnything you would want to ask experts?
Write here...

Answered 21 hours ago

No. The NTA is expected to soon release the CSIR NET 2025 Provisional Answer Key for the December session. Candidates will be able to download it by visiting the official portal or via a direct link provided on this page. They required login credentials to check the answer key.

I

Ishita Kaur

Contributor-Level 6

Answered 2 weeks ago

The CSIR NET 2025 exam was conducted on December 18 in two shifts. As per the schedule released, the Mathematical Science exam was held from 3 pm to 6 pm on Dec 18. 

I

Ishita Kaur

Contributor-Level 6

Answered 3 weeks ago

The CSIR NET 2025 Notification was released on September 25 in the form of PDF at csirnet.nta.nic.in. The notification conists if the important information related to the exam like exam dates, syllabus, pattern of an exam, etc.

G

Gunjan Majumder

Contributor-Level 6

Answered a month ago

The National Testing Agency declare the CSIR NET Cut off. It will be released subject and category-wise. The cut off is prepared on the basis of several factors including difficulty of the exam, reservation norms, number of candidates, etc.

K

Kritika Sharma

Contributor-Level 6

Answered 2 months ago

Some of the topics that a candidate can revise in the CSIR NET Chemical Science subject:

Organic Reactive Intermediates: Carbocation, Carbanions, Free Radicals, Benzynes
Stereochemistry: Stereogenicity, Stereoselectivity, Enantioselectivity
Organic Reaction Mechanisms 
Pericyclic Reactions
Structure Dete

...Read more

S

Shikha Goyal

Contributor-Level 10

Answered 2 months ago

The authority will release the CSIR NET 2025 result for the December session on the official website at csirnet.nta.nic.in. It will contain the name of a candidate, roll number, category, parents' name, Post applied (JRF and Assistant Professor or Assistant Professor Only), subject code, etc.

G

Gunjan Majumder

Contributor-Level 6

Answered 2 months ago

The authority will release the CSIR NET answer key at csirnet.nta.nic.in. It contains correct answers for all the questions asked in the exam. Check below for more details:

Exam name

Exam date

Exam shift

Exam subject name

Exam subject code

Question IDs

Correct option IDs

-

V

Virajita Shukla

Contributor-Level 6

Answered 2 months ago

The CSIR NET 2025 final answer key will be released on the official website at csirnet.nta.nic.in. After analysing the representations of the aspirants, the NTA will release the CSIR UGC NET final answer key for the Dec session. The answer key will be released in two phases- Provisional and Final. 

N

Nitesh Pruthi

Contributor-Level 6

Answered 2 months ago

Candidates can calculate the CSIR NET Chemical Sciences scores through the answer key in the following manner.

CSIR NET Chemical Science Paper Parts

Marks Allotted for Each Question 

Marks Deducted for Each Question

A

+2

-0.5

B

+2

-0.5

C

+4

-1

K

Kritika Sharma

Contributor-Level 6

Answered 2 months ago

As per the information bulletin, the upper age limit for the CSIR NET exam should not be more than 30 years as on the first day of the month in which the examination is concluded. A relaxation of upto 5 years is provided to the candidates belonging to OBC-NCL (as per the Central list of OBC) /SC/ST/

...Read more

M

Manisha Singh

Contributor-Level 6

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