CSIR NET 2025 Life Science Exam Analysis LIVE – Key Questions, Difficulty & Updates
December Session Shift 1 concluded at 12 PM on December 18, 2025. The National Testing Agency (NTA) conducted the examination in online mode for Life Science and Earth, Atmospheric, Ocean & Planetary Sciences.
Below is the LIVE coverage, key questions asked, student reactions, and exam pattern.
Important Work & Numerical Questions Asked
Candidates reported questions from Work & Time, Approximation, and Ecology:
-
A hand pump fills a tank in 45 mins, B in 120 mins. Total time if both work together?
→ 31 minutes approx -
Cube of 0.99 is closest to?
→ 0.99³ ≈ 0.970299 ≈ 0.97 -
Geological / Evolution Sequence:
Proterozoic → Archeozoic → Phanerozoic -
Genetics:
Difference between Bacteria vs Archaebacteria -
DNA replication enzyme order:
DNA Helicase → DNA Gyrase → Primase → DNA Pol III → DNA Pol I → DNA Ligase
LIVE Student Analysis – Topics Asked in Life Science Exam
12:39 PM IST – More questions reported
- Nitrogen Cycle
- Coding-Decoding
- Short Day Plant (diagram-based)
- Simple Interest
12:35 PM IST – Difficulty Level Insights
- Geological Time Scale – Easy
- Stress Physiology
- Nest Limb Development
- Many students found Section B easier
12:22 PM IST – Overall Difficulty
- Overall difficulty: Moderate to Tough
- Developmental Biology & Ecology – Easy
12:05 PM IST
CSIR NET December Session Shift 1 Completed
11:22 AM IST
Shift 1 to conclude at 12 PM
CSIR NET 2025 Exam Pattern – Life Science
| Particulars | Part A | Part B | Part C | Total |
|---|---|---|---|---|
| Total questions | 20 | 50 | 75 | 145 |
| To be attempted | 15 | 35 | 25 | 75 |
| Marks per correct | 2 | 2 | 4 | - |
| Negative marking | 0.5 | 0.5 | 1 | - |
| Maximum marks | 30 | 70 | 100 | 200 |
Exam Day Guidelines – December 18, 2025
- Carry printed admit card
- Valid photo ID required
- Follow instructions on hall ticket
Dress Code Advisory
No strict dress code, but avoid:
- metal accessories
- heavy clothes
- thick sole shoes
EXAM FAQ Answered
❓ Why is analysis important for UGC NET preparation?
Answer:
Exam analysis helps aspirants understand:
- the level of questions asked
- topic-wise weightage trends
- changes in paper pattern
- high scoring and frequently asked units
- time-management strategies
Analysis helps candidates adjust their preparation plan, focus on important areas, and avoid mistakes made by previous students.
❓ What is the marking scheme of CSIR NET Chemical Science?
Answer:
| Part | Questions asked | Questions to attempt | Marks per correct | Negative marking |
|---|---|---|---|---|
| Part A | 20 | 15 | 2 | 0.5 |
| Part B | 40–50 | 35 | 2 | 0.5 |
| Part C | 60–75 | 25 | 4 | 1 |
| Total Marks | – | 75 questions | – | – |
| Total Score | – | – | – | 200 marks |
CSIR NET 2025 Life Science Analysis LIVE: Key Questions, Difficulty & Exam Pattern
CSIR NET 2025 Life Science December Shift 1 analysis released. Check questions asked, difficulty level, exam pattern, marking scheme, and exam day guidelines.
CSIR NET 2025 life science analysis
CSIR NET question paper difficulty
CSIR NET 2025 shift exam review
CSIR NET marking scheme chemical science
CSIR NET exam day guidelines
CSIR NET live updates
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