Preparing for UGC NET Environmental Sciences becomes easier when you stop treating the syllabus as one enormous list and start seeing it as a connected system of concepts, calculations, applications and current environmental issues. The official subject name is Environmental Sciences, its subject code is 89, and Paper 2 is organised into ten units.
What is the UGC NET Environmental Science syllabus?
The UGC NET Environmental Sciences Paper 2 syllabus consists of ten units: fundamentals, environmental chemistry, environmental biology, geosciences, energy, pollution control, waste management, environmental assessment and legislation, statistics and modelling, and contemporary environmental issues.
The current official syllabus is listed as applicable from June 2019 onwards. “Syllabus 2026” therefore means the official syllabus currently applicable to candidates preparing for the 2026 examination cycle—not a newly introduced syllabus unless UGC announces a revision.
Official syllabus reference: UGC NET Environmental Sciences syllabus PDF.
UGC NET Environmental Sciences at a glance
| Particular | Details |
|---|---|
| Official subject name | Environmental Sciences |
| Subject code | 89 |
| Subject paper | Paper 2 |
| Number of syllabus units | 10 |
| Paper 2 questions | 100 compulsory MCQs |
| Paper 2 marks | 200 marks |
| Paper 1 | 50 compulsory questions for 100 marks |
| Total duration | Three hours for both papers |
| Exam mode | Computer-Based Test |
Yes. Environmental Sciences candidates must attempt both Paper 1 and Paper 2. Final qualification is based on the combined performance in both papers, so Paper 1 should be prepared alongside the EVS syllabus—not postponed until the end.
The syllabus is wide, but it is not random. Each unit supports the next: fundamentals explain processes, science explains causes, and management explains solutions.
Fundamentals of Environmental Sciences
Unit 1 builds the vocabulary and scientific base used across the remaining syllabus. It introduces environmental systems, thermodynamics, meteorology, natural-resource assessment, sustainable development, remote sensing and GIS.
Major topics
- Definition, scope and principles of environmental science
- Atmosphere, hydrosphere, lithosphere and biosphere
- Laws of thermodynamics; heat, mass and energy transfer
- Material balance and environmental-system interactions
- Meteorological parameters, lapse rates and wind roses
- Biogeographic provinces and agro-climatic zones of India
- Sustainable development and natural-resource assessment
- Remote sensing, GIS, image interpretation and ground truthing
- Environmental education, awareness and ethics
Unit 1 supplies concepts used later in chemistry, pollution, climate, geosciences and energy. It is the most logical first unit for beginners.
Environmental Chemistry
Environmental Chemistry explains how pollutants behave, transform, dissolve, react and move through environmental systems. It combines basic chemistry with atmospheric, aquatic and toxicological applications.
Major topics
- Stoichiometry, chemical equilibrium, kinetics and Gibbs energy
- Gas solubility, carbonate system, pH and redox potential
- Atmospheric particles, ions, radicals, ozone and photochemical smog
- Hydrological cycle and aquatic chemistry
- Dissolved oxygen, BOD, COD and wastewater-chemistry concepts
- Biogeochemical cycles
- Pesticides, heavy metals, metalloids and persistent organic pollutants
- Analytical methods: chromatography, spectroscopy, XRF, XRD, NMR, FTIR, GC-MS, SEM and TEM
Avoid memorising isolated terminology. Link carbonate chemistry with water quality, ozone chemistry with atmospheric pollution, heavy metals with toxicology, and analytical techniques with pollutant measurement.
Environmental Biology
Unit 3 covers ecology, biodiversity, population and community processes, toxicology, microbiology, conservation and environmental biotechnology.
Major topics
- Ecosystem structure, functions, energy flow and ecological productivity
- Food chains, food webs, ecological pyramids and succession
- Ecotones, edge effect, ecological niches and ecosystem stability
- Population-growth models, carrying capacity, r/K selection and keystone species
- Community interactions and biological invasions
- Terrestrial, freshwater, marine and estuarine ecosystems
- Biodiversity, hotspots, protected areas and restoration ecology
- Toxicology, dose-response relationships and toxicity testing
- Environmental microbiology, bioremediation, bioindicators, biofertilisers and biosensors
Draw the major ecological diagrams yourself. Visual recall is generally more reliable than memorising long definitions for this unit.
Environmental Geosciences
This unit connects geology, climatology, soil science, hydrology, groundwater and natural hazards. Students should divide it into Earth, atmosphere, soil, water and disaster-related blocks.
Major topics
- Origin and internal structure of Earth
- Minerals, rocks, plate tectonics and landform development
- Earth’s energy budget, Coriolis force and wind systems
- Indian monsoon, western disturbances, El Niño and La Niña
- Weathering, erosion, deposition, soil formation and clay minerals
- Geochemistry and paleoclimate
- Hydrology, hydrogeology and groundwater provinces of India
- Darcy’s law, hydraulic conductivity and groundwater contamination
- Floods, earthquakes, landslides, tsunamis and hazard mitigation
Energy and Environment
Unit 5 examines conventional and renewable energy sources, their operating principles and their environmental consequences.
Major topics
- Solar radiation and energy-use patterns
- Coal, petroleum, natural gas, shale oil, gas hydrates and coal-bed methane
- Gross and net calorific values
- Hydropower, tidal energy and ocean thermal energy conversion
- Wind, geothermal and solar-energy systems
- Solar collectors, photovoltaic systems and solar ponds
- Nuclear fission, fusion and reactors
- Biomass, bioenergy and energy recovery
- Carbon emissions, radiative forcing and global warming
- Environmental impacts of large energy projects
Environmental Pollution and Control
One of the broadest syllabus units, Unit 6 covers air, water, noise, soil, thermal, marine and radioactive pollution—from sources and measurement to environmental effects and control technologies.
Air pollution
- Natural and anthropogenic sources
- Primary, secondary and criteria pollutants
- Ambient-air and stack-emission monitoring
- Health impacts, acid rain and indoor-air pollution
- Dispersion, mixing height and Gaussian plume model
- Particulate and gaseous-pollutant control devices
- Vehicular emissions
Water, noise and other pollution
- Water-quality sampling, pH, EC, turbidity, TDS, hardness, DO, BOD and COD
- Drinking-water and wastewater-treatment processes
- Noise indices: Leq, L10, L50, L90, LDN and TNI
- Soil contamination and pesticide degradation
- Thermal pollution and urban heat islands
- Marine and coastal pollution
- Radioactive pollution and radiation protection
Solid and Hazardous Waste Management
Unit 7 follows the complete waste journey: generation, characterisation, segregation, collection, transport, treatment, recovery and final disposal.
Major topics
- Solid-waste sources, types, characteristics and generation rates
- Proximate and ultimate analysis
- Collection systems, transport and transfer stations
- Recycling, resource recovery and refuse-derived fuel
- Composting, vermicomposting and biomethanation
- Sanitary landfilling and incineration
- Hazardous-waste identification and treatment
- Neutralisation, oxidation-reduction, precipitation and solidification
- E-waste, fly ash and plastic waste
Environmental Assessment, Management and Legislation
Unit 8 connects science with decision-making. It includes Environmental Impact Assessment, risk, audits, management systems, Indian laws and international environmental agreements.
Assessment and management
- Environmental Impact Assessment, EIS and Environmental Management Plan
- Impact-assessment methodologies and project review
- Life-cycle assessment and cost-benefit analysis
- Environmental audits and ISO 14000 series
- Risk assessment, risk management and eco-labelling
Legislation and global agreements
- Constitutional provisions and major Indian environmental laws
- Rules concerning waste, noise, hazardous chemicals and coastal regulation
- Stockholm Conference, Ramsar Convention and Montreal Protocol
- Basel Convention, Rio Earth Summit and Agenda 21
- CBD, UNFCCC, Kyoto Protocol, CDM, Rio+20, IPCC and UNEP
Some laws and waste-management rules have changed since the syllabus was framed. Prepare the official syllabus terminology, but verify major current amendments through authoritative government sources.
Statistical Approaches and Modelling
Unit 9 is calculation-oriented. Confidence comes from solving questions—not from reading formulas repeatedly.
Major topics
- Variables, attributes and measurement scales
- Central tendency, dispersion, standard error, skewness and kurtosis
- Probability and sampling
- Normal, log-normal, binomial and Poisson distributions
- t, chi-square and F distributions
- Correlation and regression
- Hypothesis testing, t-test and chi-square test
- One-way and two-way ANOVA
- Confidence limits and environmental-model validation
- Forecasting, Lotka–Volterra model and Leslie matrix model
Contemporary Environmental Issues
Unit 10 combines static environmental science with major national and global challenges. It requires both syllabus-based notes and carefully selected current updates.
Major topics
- Biodiversity loss, climate change, ozone depletion and sea-level rise
- National Action Plan on Climate Change
- Water conflicts, watershed development and rainwater harvesting
- Groundwater recharge, river conservation and wetland protection
- Soil erosion, desertification and resource security
- Environmental movements and wildlife-conservation programmes
- Carbon sequestration, carbon credits and green buildings
- Vehicular-emission norms and environmental-health problems
- Major environmental disasters such as Minamata, Bhopal, Chernobyl and Fukushima
Important topics for UGC NET Environmental Science
UGC and NTA do not publish a fixed official unit-wise weightage in the syllabus. No topic should therefore be treated as guaranteed or safely ignored. The following areas deserve high preparation priority because they are broad, connected and frequently support questions across multiple units.
Concept-heavy priorities
- Ecosystem structure, productivity and energy flow
- Population ecology, succession and biodiversity conservation
- Biogeochemical cycles and environmental toxicology
- Climate, hydrology and groundwater
- Energy sources and environmental impacts
- Air and water pollution control
- Wastewater treatment, EIA and environmental legislation
- Climate change and contemporary environmental issues
Numerical priorities
- Thermodynamics and material balance
- Stoichiometry, equilibrium and pH
- DO, BOD and COD
- Population growth and diversity measures
- Darcy’s law and energy calculations
- Gaussian plume model and noise indices
- Waste-generation calculations
- Probability, regression, hypothesis testing and ANOVA
Memory-based priorities
- Environmental laws, rules and years
- International conventions and protocols
- Environmental standards and pollution-control equipment
- Analytical instruments and their applications
- Biodiversity hotspots, protected areas and conservation projects
- Environmental movements, programmes and disasters
Which unit should a beginner study first?
The official syllabus does not prescribe a preparation sequence. The following order is designed to help beginners move from foundation concepts to technical subjects and finally to management and current applications.
Stage 1 — Build the foundation
Unit 1 → Unit 3 → Unit 6
Start with environmental systems and ecology, then apply those concepts to pollution.
Stage 2 — Complete technical subjects
Unit 2 → Unit 4 → Unit 5 → Unit 9
Give these units more practice time because chemistry, hydrology, energy and statistics contain calculations.
Stage 3 — Study applied units
Unit 7 → Unit 8 → Unit 10
Finish with waste management, policy, legislation and contemporary issues.
This is an SWMG-recommended learning sequence. It is not an official UGC order and it does not indicate guaranteed unit-wise weightage.
Three-month UGC NET EVS study plan
Month 1 — Build conceptual foundations
- Weeks 1–2: Unit 1 and the beginning of Unit 3
- Weeks 3–4: Complete Unit 3 and start Unit 6
- Begin Paper 1 fundamentals
- Solve topic-wise PYQs after every completed section
Month 2 — Complete technical and numerical units
- Weeks 5–6: Unit 2 and Unit 4
- Weeks 7–8: Unit 5 and Unit 9
- Maintain weekly formula revision
- Practise Paper 1 reasoning and data interpretation
Month 3 — Applications, revision and tests
- Weeks 9–10: Units 7, 8 and 10
- Weeks 11–12: full-syllabus revision and mock tests
- Analyse conceptual, calculation, memory and time-management errors
- Revise weak topics repeatedly
Balanced weekly time allocation
| Study area | Suggested share |
|---|---|
| Environmental Sciences concepts | 50% |
| EVS previous-year questions and tests | 20% |
| Paper 1 concepts and practice | 20% |
| Revision and error analysis | 10% |
Common preparation mistakes
Studying only ecology and pollution
Environmental Sciences is multidisciplinary. Ignoring chemistry, geosciences, statistics or legislation creates large syllabus gaps.
Avoiding numerical questions
Units 2, 4, 5, 6 and 9 contain calculation-oriented areas. Numerical practice should begin early rather than during the final revision phase.
Memorising laws without understanding them
Understand the purpose, scope and application of a law before learning dates and provisions.
Collecting too many books and PDFs
Use a limited set of syllabus-aligned resources and revise them multiple times.
Postponing Paper 1
Paper 1 contributes one-third of the total examination marks and should be prepared throughout the plan.
Taking tests without analysing errors
Label every wrong answer as a conceptual, calculation, memory, misreading or time-management error.
Turn the ten-unit syllabus into a clear study system
Prepare through syllabus-aligned concept classes, numerical practice, previous-year questions, revision support and examination-oriented tests guided by an educator with JRF and a PhD in Environmental Science.
Frequently asked questions
How many units are there in UGC NET Environmental Science?
The official UGC NET Environmental Sciences Paper 2 syllabus contains ten units.
What is the UGC NET Environmental Science subject code?
The official subject code for Environmental Sciences is 89.
Is the official subject called Environmental Science or Environmental Sciences?
The official UGC NET subject name is Environmental Sciences. Students commonly search for the subject using both Environmental Science and Environmental Sciences.
How many questions are asked in Environmental Sciences Paper 2?
Paper 2 contains 100 compulsory multiple-choice questions for 200 marks.
Is Paper 1 compulsory with Environmental Sciences Paper 2?
Yes. Candidates must attempt both Paper 1 and Environmental Sciences Paper 2.
Does UGC NET Environmental Science include numerical questions?
Yes. Numerical concepts appear in chemistry, geosciences, energy, pollution, waste management, ecology and especially statistics and modelling.
Which is the most difficult unit in UGC NET EVS?
Difficulty depends on academic background. Students uncomfortable with mathematics often find Unit 9 challenging, while others may need extra time for chemistry or geosciences.
Can the UGC NET EVS syllabus be completed in three months?
It can be completed with a disciplined daily plan, especially when the student already knows the fundamentals. Complete beginners may need additional time for numerical units.
Which unit should a beginner study first?
A beginner can start with Unit 1, followed by Unit 3 and Unit 6, before moving to chemistry, geosciences, energy and statistics.
Are previous-year questions enough for UGC NET EVS?
No. PYQs are essential for understanding question patterns, but they should be combined with complete syllabus coverage, concept study, revision and mock tests.
Final preparation advice
The UGC NET Environmental Science syllabus is wide but manageable when divided into conceptual, technical, numerical and application-based blocks. Start with fundamentals and ecology, move gradually into chemistry, geosciences and statistics, and finish with waste, legislation and contemporary issues.
Do not measure progress only by the number of completed lectures. A complete preparation system includes syllabus coverage, conceptual understanding, formula revision, previous-year questions, topic-wise tests, full-length mocks, error analysis and repeated revision.