CSIR NET 2025 June Life & Earth Science (Shift 1) Question Paper Analysis OUT, Answer Key, Expected Cutoff

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

Shikha
Shikha Goyal
Assistant Manager
Updated on Jul 29, 2025 11:51 IST
The NTA conducted the CSIR NET 2025 June exam for Life & Earth Science in the first shift from 9 am to 12 pm. Candidates can check below the CSIR NET 2025 first shift, which is Life Science and Earth Science exam analysis, including the overall difficulty level, topics asked, expected cutoff, questions, etc., based on the students' feedback.

CSIR NET 2025 June Session Question Paper Analysis is available here for the exam conducted on July 28 in the first shift from 9 am to 12 noon for subjects Life and Earth Science. Scroll down to know about the overall difficulty level, topics asked, memory-based questions, answers, and expected cutoff for subjects Life Science and Earth Science.

CSIR NET 2025 June Life & Earth Science Analysis

CSIR NET 2025 June Life & Earth Science Analysis

CSIR NET 2025 Life & Earth Science Anaysis: The National Testing Agency (NTA) conducted the CSIR UGC NET 2025 exam for the June session on July 28 for subjects Life Science and Earth Science in the first shift. It was started at 9 am and concluded at 12 noon. Analysis is an important part of the examination as it provides information regarding the difficulty level of the examination, the question paper, the topics asked in the exam, etc. Candidates can predict, regarding the cutoff, whether it will rise or drop. The total number of questions asked in the Life Science exam is 145, and candidates need to attempt 75 questions where as in Earth Science, total questions asked are 150 and candidates required to attempt 75 questions. The CSIR NET 2025 Exam (Life Science & Earth Science) is divided into three parts, namely Part A, Part B, and Part C. Candidates can check below the detailed CSIR NET 2025 June Life Science & Earth Science exam analysis based on the student reactions, overall difficulty level, topics asked, memory-based questions and answers, etc.

Table of contents
  • CSIR NET June Life Science Exam Analysis 2025: Student Reactions & Topics asked (Shift 1, July 28)
  • CSIR NET Section-Wise Analysis: June Life Science (Shift 1)
  • CSIR NET 2025 June Exam Students Reactions Video
  • CSIR NET Section-Wise Analysis: June Earth Science (Shift 1)
  • CSIR NET 2025 June Answer Key

CSIR NET June Life Science Exam Analysis 2025: Student Reactions & Topics asked (Shift 1, July 28) 

According to the students responses, the Life Science exam is Difficult in overall difficulty level. Students also felt that Part C of the Life Science exam was difficult as compared to earlier CSIR NET exam. Some also felt Part B a bit difficult.

Topics asked in Life Science are:

As per the students, topics asked in the Life Science exam are mentioned below:

  • GLUT 5
  • Tight junction
  • CdK-2
  • Ramachandran Plot
  • Non Photochemical Quenching
  • HPV (Cancer causing virus)
  • Leaf Development (Phytohormone)
  • TAL effector
  • Biosynthesis of phytohormones (question from Plant)
  • Asymmetric cell division in plant
  • K & r selected
  • Unbranched GAGs
  • Evolution (sequence oldest to latest)
  • Great Indian Bustard
  • Terpenes
  • Difference between bacteria and archaebacteria, etc.

Topics asked from Plant Physiology are:

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.

  • Pathway & Hormones
  • Disease'2 degree metabolites
  • Cytokinin
  • Lignin
  • Asymmetrical cell (division in plants)
  • Leaf Development
  • Chronology in wheat
  • Photosystem I & II, etc.

CSIR NET Life Science 2025 Questions asked in Exam

  • Ecology-sequence of Proterozoic, Archeozoic, Phanerozoic Eras
  • Arrange the eras in order from youngest to oldest: Archaeozoic, Proterozoic, Phanerozoic
  • Arrange in order: DNA Gyrase, DNA Helicase, DNA Primase, DNA Pol 3, DNA Pol 1, DNA Ligase
  • What is the remainder when 2023^2024 + 2025^2024 is divided by 2024?
  • A marble block measuring 5m X 4mX 2m is cut into rectangular slabs of size 1m X 0.5m wit a thickness of 10 cm. If 10% of the marble is lost during grinding, how many slabs can be obtained?
  • Numerical Approximation: Cube of 0.99 is closed to 
  • A. 0,33
  • B. 0.99
  • C. 0.21

CSIR NET Section-Wise Analysis: June Life Science (Shift 1)

Candidates can check the CSIR NET 2025 June Life Science Analysis for Shift 1 in the table below based on the students' review.

Part Name

Total MCQs

Total MCQs to be Attempted

Difficulty Level

Good Attempts

Part A

20

15

Easy

9-12

Part B

50

35

Moderate to Difficult

18-22

Part C

75

25

Difficult 

20-24

Total

145

75

Difficult (Overall)

110+

CSIR NET 2025 June Exam Students Reactions Video

Upcoming Sarkari Exam Dates

IBPS PO 2025 Interview Call Le...

9 Dec '25 - 24 Dec '25

IBPS RRB 2025 Single Online Exam

28 Dec '25

UGC NET 2025 Dec Exam Date

31 Dec '25 - 7 Jan '26

UPSC IAS Main Result 2025

11 Nov '25 - 30 Apr '26

IBPS Clerk 2026 notification

31 Aug '26

TSTET Admit Card Release

27 Dec '25

Also Read: 

CSIR NET 2025 Syllabus

CSIR NET Section-Wise Analysis: June Earth Science (Shift 1)

Candidates can check the CSIR NET 2025 June Earth Science Analysis for Shift 1 in the table below based on the students' review.

Part Name

Total MCQs

Total MCQs to be Attempted

Difficulty Level

Good Attempts

Part A

20

15

to be updated here

to be updated here

Part B

50

35

to be updated here

to be updated here

Part C

80

25

to be updated here

to be updated here

Total

150

75

to be updated here

to be updated here

CSIR NET 2025 June Answer Key

The National Testing Agency (NTA) will release the CSIR NET June Answer Key 2025 one week after the exam was concluded. Candidates will be able to raise objections against the CSIR UGC NET Provisional Answer Key by using their login credentials into the official website for a specific time period. The CSIR UGC NET 2025 June session exam is conducted on July 28. The Answer Key of CSIR NET will be available in the PDF format. After releasing the final answer key, CSIR NET Result & Cut-off will soon be published by NTA.

Read More:

CSIR NET 2025 Exam Pattern

CSIR NET 2025 Earth Science Syllabus

About the Author
author-image
Shikha Goyal
Assistant Manager

Role: Editorial Domain

Education: Mass Com & Journalism, MSC Mathematics

Expertise: Sarkari Exam Expert

About

Shikha Goyal is a double post graduate with more than 12 years of experience in education domain, journal

Read Full Bio
Download Important Dates for Sarkari Exams Exams

News & Updates

Latest NewsPopular News

Explore Other Exams

19 Dec '25

SSC JE Tier 1 Provisional Answ...

19 Dec '25 -

22 Dec '25

SSC JE Tier 1 Answer Key Objec...

4 Oct '25 -

6 Oct '25

Application Correction

1 Oct '25 -

3 Oct '25

HP TET Nov 2025 Application Wi...

Aug '25

Kerala SET 2025 July Exam

12 Jun '25

Kerala SET 2025 July Applicati...

31 Dec '25 -

7 Jan '26

UGC NET 2025 Dec Exam Date

17 Dec '25

UGC NET 2025 Dec Exam Schedule...

29 Sep '25

KTET Answer Key

18 Sep '25 -

19 Sep '25

KTET Exam Date

17 Dec '25

OTET Exam Date

10 Dec '25

OTET Admit Card

27 Dec '25

TSTET Admit Card Release

3 Jan '26 -

31 Jan '26

TSTET Exam Date

28 Dec '25

IBPS RRB 2025 Single Online Ex...

28 Dec '25

IBPS RRB PO 2025 Mains Exam

Nov '25

UPSC IAS Main Result 2025

22 Aug '25 -

31 Aug '25

IAS Main 2025 Exam Date

7 Sep '25

JK SET Exam

1 Sep '25

Release of admit card

The list of exams are recommended based on what other exams do the students in your area show interest in
qna

Student Forum

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

Answered 2 weeks ago

The CSIR NET 2025 exam will be conducted on December 18 in two shifts. As per the schedule released, the Mathematical Science exam will be 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 a month 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 a month 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 a month 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 a month 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 a month 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

Answered 2 months ago

The authority released the CSIR NET 2025 application form at csirnet.nta.nic.in. The last date to apply was October 27. Candidates who are interested in appearing the exam, need to fill the application form by providing all the details as asked. 

 

C

Chanchal Shekhar

Contributor-Level 6