The CSIR-UGC National Eligibility Test (NET) for Earth, Atmospheric, Ocean, and Planetary Sciences is the gateway to securing a Junior Research Fellowship (JRF) or eligibility for Lectureship (LS)/Assistant Professor in Indian universities. Mastering the exam structure, marking scheme, and question distribution is the most crucial step toward a successful attempt in 2025.
🔬 CSIR NET Earth Science 2025: Exam Overview
The CSIR NET Earth Science paper is a single Computer-Based Test (CBT) designed to test a candidate’s comprehensive knowledge, reasoning, and analytical ability in Earth Sciences.
| Particulars | Details |
| Exam Mode | Computer-Based Test (CBT) |
| Duration | 3 hours (180 minutes) |
| Total Marks | 200 Marks |
| Total Questions Asked | 150 (Across A, B, C) |
| Total Questions to Attempt | 75 |
| Question Type | Multiple-Choice Questions (MCQs) |
| Language | English and Hindi |
🔢 Detailed Sectional Pattern & Marking Scheme
The paper is divided into three distinct parts—Part A, Part B, and Part C—each serving a specific purpose in assessing the candidate.
| Section | Focus Area | Total Questions Asked | Max Questions to Attempt | Marks per Correct Answer | Negative Marking (Deduction) | Maximum Marks |
| Part A | General Aptitude (Reasoning, Quant. Analysis, Research Aptitude) | 20 | 15 | +2 | -0.5 (25%) | 30 |
| Part B | Core Earth Science (Subject-related conventional MCQs) | 50 | 35 | +2 | -0.5 (25%) | 70 |
| Part C | Advanced & Analytical (Higher-value, scientific concept application) | 80 | 25 | +4 | -1.32 (33%) | 100 |
| Total | 150 | 75 | – | – | 200 |
⚠️ Key Note on Attempting Questions: If a candidate attempts more than the maximum number of questions allowed in any section (e.g., 18 questions in Part A), only the first 15 attempted questions will be considered for evaluation and marking.
https://drive.google.com/file/d/1QXdN7OaOVm7ytbkCLY6JBv5p-WxnAjfk/view
âť“ Frequently Asked Questions (FAQs)
Q1: What is the primary difference between Part B and Part C questions?
A: Part B questions (2 Marks) are generally conventional MCQs that test your fundamental and factual knowledge of core Earth Science subjects. Part C questions (4 Marks) are analytical and application-based, designed to test your understanding of scientific concepts and your ability to apply them to solve problems, often requiring multi-step thinking or analysis of given data/diagrams.
Q2: Why is the negative marking higher for Part C?
A: Part C carries the highest weightage (4 marks per question and 100 total marks), making it the most critical section. The higher negative marking (approx. 33% or -1.32 marks) is implemented to discourage random guessing and encourage accuracy due to the analytical nature and high reward of these questions.
Q3: What core subjects are included in the Earth Science syllabus?
A: The syllabus is comprehensive, covering four major areas:
- Geology: Mineralogy, Petrology, Structural Geology, Sedimentology, Geochemistry, Economic Geology, Paleontology.
- Oceanography: Physical, Chemical, Biological, and Geological Oceanography.
- Atmospheric Sciences: Climatology, Meteorology, Atmospheric Physics.
- Planetary Science: Earth and the Solar System, Geophysics, Remote Sensing, and GIS.
Q4: Are there minimum qualifying marks for the CSIR NET?
A: Yes, the CSIR NET prescribes minimum qualifying criteria. While the final cutoff is based on the performance of candidates, the general minimum percentage required is:
- General/EWS/OBC: Typically 33%
- SC/ST/PwD: Typically 25%