CSIR NET Exam Last 5 Year Trend Analysis: Check here CSIR NET Examination Previous Year Exam Trend Analysis!
By BYJU'S Exam Prep
Updated on: September 13th, 2023

The NTA will conduct the CSIR NET Exam 2022 from 16th September to 18th September 2022. The candidates appearing for the Examination must be aware of the CSIR NET Most Expected Questions based on the previous year’s exam analysis. This will help the candidates to prepare the most important topics from their subjects in the CSIR NET Syllabus.
We have developed the article below that contains the list of CSIR NET Previous Years Exam Analysis & the most asked units for the CSIR NET Exam.
Table of content
CSIR NET Exam Pattern 2022
The candidates can check the different tables below to acknowledge the different CSIR NET Exam pattern for the different subjects.
Exam Pattern for Life Science
The table below contains the questions and marking scheme of the CSIR NET Life Sciences Exam.
CSIR NET Exam Pattern for Life Science | ||||
Sections | Total Questions | Questions to attempt | Marks Allotted | Negative marking |
Part A | 20 | 15 | 2 | 0.5 |
Part B | 50 | 35 | 2 | 0.5 |
Part C | 75 | 25 | 4 | 1 |
Total | 145 | 75 | 200 | – |
Exam Pattern for Chemical Science
The table below contains the questions and marking scheme of the CSIR NET Life Sciences exam.
Chemical Sciences Pattern | Total Questions | Questions to Attempt | Marks Allocated | Negative marking |
Part A | 20 | 15 | 2 | 0.5 |
Part B | 40 | 35 | 2 | 0.5 |
Part C | 60 | 25 | 4 | 1 |
Exam Pattern for Mathematical Science
The table below contains the questions and marking scheme of the CSIR NET Life Sciences Exam.
CSIR NET Exam Pattern for Mathematics | ||||
Sections | Total Questions | Questions to attempt | Marks Allotted | Negative marking |
Part A | 20 | 15 | 2 | 0.5 |
Part B | 40 | 25 | 3 | 0.75 |
Part C | 60 | 20 | 4.75 | 0 |
Total | 120 | 60 | 200 | – |
Exam Pattern for Earth Science
The table below contains the questions and marking scheme of the CSIR NET Life Sciences Exam.
CSIR NET Exam Pattern for Earth, Atmospheric, Ocean, and Planetary Sciences | ||||
Earth, Atmospheric, Ocean and Planetary Sciences |
Total Questions | Questions to Attempt | Marks Allotted | Negative marking |
Part A | 20 | 15 | 2 | 0.5 |
Part B | 50 | 35 | 2 | 0.5 |
Part C | 80 | 25 | 4 | 1.32 |
Total | 150 | 75 | 200 | – |
Exam Pattern for Physical Science
The candidates can check the exam pattern along with the marking of CSIR NET Physical Science with the help of the table given below:
CSIR NET Exam Pattern for Physics | ||||
Physical Sciences | Total Questions | Max No of Questions to attempt | Marks for each correct answer | Negative marking |
Part A | 20 | 15 | 2 | 0.5 |
Part B | 25 | 20 | 3.5 | 0.875 |
Part C | 30 | 20 | 5 | 1.25 |
Total | 75 | 55 | 200 | – |
CSIR NET Topic Wise Weightage
The different tables below have been developed with the help of the CSIR NET Previous Year’s Question Paper analysis for Life Science, Chemical Science, & Mathematical Sciences. The candidates can check the table below and prepare for their examinations accordingly.
Topic Wise Question Distribution for Life Science
The table below contains the total number of questions asked from the different units of the CSIR NET Life Sciences Exam in the previous year-
Year | Molecules & Their Interaction Relevant to Biology | Genetics – Inheritance Biology | System Physiology- Animal | System Physiology – Plant | Methods in Biology | Diversity of Life Forms | Ecology – Ecological Principles | Development Biology | Fundamental Processes | Cellular Organisation |
2021 | 10 | 10 | 12 | 10 | 11 | 8-9 | 10 | 10 | 30 | 6 |
2018 | 9 | 12 | 10 | 11 | 12 | 10 | 12 | 10 | 31 | 5 |
2017 | 10 | 10 | 13 | 10 | 9 | 13 | 13 | 10 | 28 | 6 |
2016 | 11 | 11 | 12 | 10 | 10 | 12 | 11 | 14 | 25 | 9 |
2015 | 10 | 12 | 13 | 15 | 12 | 13 | 10 | 10 | 32 | 3 |
Topic Wise Marks Distribution for Chemical Science
The table below contains the number of questions asked for the different units of the CSIR NET Chemical Science Previous Years Examination-
Year | Organic Chemistry | Inorganic Chemistry | Physical Chemistry |
2021 | 39 | 28 | 32 |
2018 | 45 | 30 | 40 |
2017 | 45 | 30 | 34 |
2016 | 38 | 40 | 40 |
2015 | 40 | 35 | 35 |
Topic Wise Marks Distribution for Mathematical Science
Here are the number of questions asked for the different units of the CSIR NET Mathematical Science Previous Years Examination-
Year | Unit 1 | Unit 2 | Unit 3 |
2021 | 30 | 30 | 40 |
2018 | 32 | 35 | 38 |
2017 | 30 | 34 | 35 |
2016 | 30 | 30 | 40 |
2015 | 35 | 30 | 40 |