NIOS Class 12 Environmental Science (333) Syllabus 2025-26 - Complete Guide by Unnati Education
Learn to care for the Earth and pass with confidence - Full Environment Science (333) Syllabus.
NIOS Environmental Science Syllabus Class 12 - Your Complete Study Guide for 2025
Learn to care for the Earth and pass with confidence - Full Environment Science (333) Syllabus.
Are you passionate about sustainability, pollution, and real-world impact? Environmental Science (333) in NIOS Class 12 is more than a subject its a life skill.
Whether you're from Arts, Science, or Commerce, this subject is scoring, practical, and relevant. At Unnati Education, weve helped thousands master this syllabus with notes, TMAs, practical files, and live coaching.
Environmental Science (333) Syllabus - Bifurcation & Marks Distribution
Course Structure: The NIOS Class 12 Environmental Science (333) syllabus for 2025-26 is divided into 4 modules with 20 lessons, focusing on ecology, human impact, awareness, and sustainable development. Total marks: 80 (Theory) + 20 (Practical/TMA) = 100.
- Module 1: Ecology and Environment
- Lesson 1: Ecology and Ecosystems
- Lesson 2: Biodiversity
- Lesson 3: Natural Resources
- Lesson 4: Environmental Pollution
- Lesson 5: Solid Waste Management
- Module 2: Human Communities and Health
- Lesson 6: Human Population
- Lesson 7: Human and Environment
- Lesson 8: Environmental and Health
- Lesson 9: Civil Society and Social Movements
- Module 3: Knowledge and Awareness of Environment
- Lesson 10: Environmental Education
- Lesson 11: Environmental Laws
- Lesson 12: Environmental Impact Assessment
- Module 4: Sustainable Development
- Lesson 13: Sustainable Agriculture
- Lesson 14: Sustainable Development
- Lesson 15: Sustainable Tourism
- Lesson 16: Sustainable Energy
- Lesson 17: Sustainable Cities
- Lesson 18: Sustainable Consumption
- Lesson 19: Sustainable Transport
- Lesson 20: Sustainable Water Management
Marks Distribution:
| Module | Marks |
|---|---|
| Module 1: Ecology and Environment | 20 |
| Module 2: Human Communities and Health | 20 |
| Module 3: Knowledge and Awareness of Environment | 20 |
| Module 4: Sustainable Development | 20 |
| Total Theory | 80 |
| Practical/TMA | 20 |
| Grand Total | 100 |
Official Syllabus PDF: Request on WhatsApp
Question Paper Design & Syllabus Bifurcation - EVS (333)
Complete Exam Pattern for NIOS Class 12 Environmental Science (Code: 333) Know how marks are distributed across TMA, Public Exam, Objectives, Question Types, and Difficulty.
Bifurcation of Syllabus (TMA vs Public Exam)
| MODULE | TMA (40%) (11 lessons) |
Public Examination (60%) |
|---|---|---|
| 1. Environment through Ages |
Lesson-1 Origin of Earth and Evolution of the Environment |
Lesson-2 Environment and Human Society Lesson-3 Degradation of Natural Environment |
| 2. Ecological Concept and Issues |
Lesson-7 Human Modified Ecosystem |
Lesson-6 Natural Ecosystem
Lesson-4 Principles of Ecology Lesson-5 Ecosystem |
| 3. Human Impact on Environment | ----- |
Lesson-8 Human Societies Lesson-9 Deforestation |
| 4. Contemporary Environmental Issues | Lesson-12 Disaster and their Management |
Lesson-10 Environmental Pollution Lesson-11 Environment and Health Lesson-13 National Environmental Issues Lesson-14 Global Environmental Issues |
| 5. Environmental Conservation |
Lesson-16 Conservation of Other Natural Resources Lesson-17 Soil and Land Conservation |
Lesson-15 Biodiversity Conservation Lesson-18 Water and Energy Conservation |
| 6. Sustainable Development |
Lesson-20 Modern Agriculture Lesson-22 Cleaner Technology |
Lesson-19 Concept of Sustainable Development Lesson-21 Concept of Sustainable Agriculture |
| 7. Environmental Management |
Lesson-25 Environment Related Institutions and Organisation Lesson-26 Environmental Ethics and Gandhian Approach |
Lesson-23 Environmental Legislation Lesson-24 Environment Impact Assessment |
| 8A. Water Resource Management |
Lesson-27A Global Circulation of Environment |
Lesson-28A Ground Water Resources Lesson-29A Fresh Water Resources Lesson-30A Methods of Water Harvesting Lesson-31A Water Conservation at Different Levels |
| 8B. Energy and Environment |
Lesson-27B Importance of Energy on Society Lesson-28B Non-Renewable Resources of Energy |
Lesson-29B Renewable Sources of Energy-I Lesson-30B Renewable Sources of Energy-II Lesson-31B Energy Conservation |
QUESTION PAPER DESIGN
| 1. Weightage by Objectives | ||
|---|---|---|
| OBJECTIVES | Marks | % of the Total Marks |
| Knowledge | 22 | 27 |
| Understanding | 38 | 48 |
| Application & Skill | 20 | 20 |
| Total | 80 | 100 |
| 2. Weightage to Forms of Questions | ||||||
|---|---|---|---|---|---|---|
| Forms of Questions | No. of Questions (Core) | No. of Questions (Optional) | Total Questions | Marks (Core) | Marks (Optional) | Total |
| Objective Type (I) 1 (1 Marks MCQs) | 13 | 03 | 16 | 13 | 03 | 16 |
| Objective Type (II) 1/2 (i) 1Χ2=2 marks (2 sub-parts) (ii) VSA/One word/Fill in the blanks/T/F |
01*2 OR + 04 | 03 | 08 | 21 | 03 | 24 |
| Short Answer1 (SA1) 2 | 08 | 03 | 11 | 16 | 06 | 22 |
| Long Answer1 (LA1) 4 | 02 | - | 02 | 08 | - | 08 |
| Long Answer2 (LA2) 5 | 02 | - | 02 | 10 | - | 10 |
| Total | 30 | 09 | 39 | 68 | 12 | 80 |
| 3. Weightage to Content Areas | |
|---|---|
| Unit/Sub-Unit (Modules) | Marks |
| 1. Environment through Ages | 05 |
| 2. Ecological Concepts and Issues | 12 |
| 3. Human Impact on Environment | 07 |
| 4. Contemporary Environmental Issues | 15 |
| 5. Environmental Conservation | 14 |
| 6. Sustainable Development | 07 |
| 7. Environmental Management | 08 |
| 8A Water Resource Management OR 8B Energy and Environment | 12 |
| Total | 80 |
| 4. Difficulty Level of Question Paper | ||
|---|---|---|
| Level | Marks | % of Marks |
| Difficult | 20 | 25 |
| Average | 38 | 48 |
| Easy | 22 | 27 |
| Total | 80 | 100 |
Note: Internal Choice is provided in SA1 (11+5 questions), LA1 (3 questions), and LA2 (3 questions).
That is, 5 in SA1 (3 in Core Module and 2 in Optional Module), 1 in LA1 and 1 in LA2 respectively.
Why Choose Environmental Science (333) in NIOS Class 12?
If you're looking for a scoring, relevant, and easy-to-understand subject EVS 333 is perfect.
- High-scoring with simple, logical concepts
- Practical component boosts overall percentage
- Real-life relevance pollution, energy, sustainability
- No complex formulas ideal for all streams
- Useful for UPSC, SSC, General Awareness
- Best for dropouts, improvement, or regular students
Become a responsible global citizen while scoring high!
How Unnati Education Helps You with Environmental Science (333)
We provide end-to-end support from admission to final viva.
Our EVS 333 Support Includes:
- Notes: Chapter-wise, in English & Hindi
- Solved TMAs: Ready-to-submit (typed/handwritten)
- Past 5 Years Papers: Fully solved
- Sample Paper 2025: Latest pattern
- Practical File: Observation, project, viva prep
- Live + Recorded Classes: Expert faculty
- WhatsApp Support: Daily updates & doubt-solving
Unnati Education: Trusted by NIOS Students Across India & Abroad
We support students from Delhi, Bihar, UP, Rajasthan, Maharashtra and globally in UAE, Nepal, Saudi Arabia.
Works for Stream 1, 2, 3, 4 regular, failed, or on-demand exams.
We also help in: Accountancy, Business Studies, Economics, Painting, Psychology, History, Sociology, English, Hindi.
Why Choose Unnati Education?
- 10+ years in NIOS & IGNOU
- 100% accurate TMAs & fast delivery
- PAN India delivery
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We dont just help you study we help you win.
Final Thoughts: Prepare Smartly for NIOS Environmental Science
The NIOS EVS syllabus is more than marks its knowledge for life. With practical focus, real-world relevance, and structured learning, its one of the most student-friendly subjects.
With Unnati Education, you get complete support notes, TMAs, files, coaching to not just pass, but excel.
FAQs - NIOS Environmental Science Syllabus Class 12
Q1. Is EVS (333) hard to pass?
A: No! One of the easiest & most scoring subjects with proper notes & practice.
Q2. Is practical compulsory?
A: Yes submit a file + viva. We provide full support.
Q3. Can I get latest syllabus & past papers?
A: Yes! We send syllabus PDF + 5 years solved papers + notes on WhatsApp.
Q4. How many TMAs to submit?
A: One per session. We provide ready-to-submit TMAs.
Q5. Is online coaching available?
A: Yes! Live classes + recordings + doubt sessions via Zoom & WhatsApp.
Contact Unnati Education
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