← Back to Graduate Aptitude Test in Engineering Hub
View Complete Graduate Aptitude Test in Engineering Syllabus
GovtJobsNet.com ES · Environmental Science and Engineering
SYLLABUS GATE Environmental Science and Engineering Syllabus 2027: ES PDF and Exam Pattern
GATE ES syllabus 2027 with the official PDF, 100-mark exam pattern and complete section-wise topic tables for Environmental Science and Engineering.
Updated:
GATE ES syllabus 2027Environmental Science and EngineeringGATE 2027 PDFIIT Madras
Use the available GATE ES Syllabus 2027 download resources and review the detailed syllabus, unit-wise topics, exam pattern information, preparation guidance below.
📸
Tired of resizing your photo for every exam?
Save your photo & signature once — auto-format for SSC, UPSC, TNPSC & 45+ portals.
Key Highlights
- ES is the official GATE code for Environmental Science and Engineering.
- The official syllabus contains 9 sections: Mathematics Foundation; Environmental Chemistry; Environmental Microbiology; Water Resources and Environmental Hydraulics; Water & Wastewater Treatment and Management; Air and Noise Pollution; Solid and Hazardous Waste Management; Global and Regional Environmental Issues; Environmental Management and Sustainable Development.
- The paper is a 3-hour Computer-Based Test for 100 marks, including 15 marks of General Aptitude.
- Allowed second-paper codes when ES is primary: CE, CH, GE.
- The official IIT Madras PDF is available in the download section.
GATE ES Syllabus 2027 Overview
The official GATE ES syllabus 2027 for Environmental Science and Engineering is organized into 9 sections, covering Mathematics Foundation, Environmental Chemistry, Environmental Microbiology, Water Resources and Environmental Hydraulics and the remaining paper-specific areas listed below. This page follows the IIT Madras syllabus order, provides the correct 100-mark exam pattern, and links the official PDF so aspirants can prepare from a complete, verified checklist.
How to Prepare from the GATE ES Syllabus
- Create one checklist for every official section and retain the same sequence used in the PDF.
- Start with a diagnostic test, then allocate more study time to weak high-coverage sections instead of dividing time equally.
- Solve previous-year GATE questions immediately after completing each topic and record errors by concept, calculation and time pressure.
- Revise formulas, definitions and frequently confused conditions in short weekly cycles, followed by mixed-section tests.
- Use the official PDF as the final scope document; coaching notes should expand a listed topic, not introduce an unrelated syllabus.
GATE ES Official Source and Internal Links
The syllabus tables were checked against the IIT Madras GATE 2027 ES PDF. Use the download section for the database-hosted copy, the GATE syllabus hub to switch papers, and the notification page for registration dates and policy updates.
Exam Pattern
GATE ES Exam Pattern 2027
| Section | Marks | How it applies |
|---|---|---|
| General Aptitude | 15 | Common to all GATE papers |
| Engineering Mathematics | 13 | Paper-specific engineering mathematics |
| Core subject questions | 72 | Selected test-paper syllabus |
| Total | 100 | 3-hour CBT |
General Aptitude
Marks
15
How it applies
Common to all GATE papers
Engineering Mathematics
Marks
13
How it applies
Paper-specific engineering mathematics
Core subject questions
Marks
72
How it applies
Selected test-paper syllabus
Total
Marks
100
How it applies
3-hour CBT
GATE ES Question and Marking Rules
| Question type | Possible marks | Negative marking |
|---|---|---|
| MCQ | 1 or 2 | Yes: 1/3 for a wrong 1-mark MCQ; 2/3 for a wrong 2-mark MCQ |
| MSQ | 1 or 2 | No negative marking and no partial marking |
| NAT | 1 or 2 | No negative marking |
MCQ
Possible marks
1 or 2
Negative marking
Yes: 1/3 for a wrong 1-mark MCQ; 2/3 for a wrong 2-mark MCQ
MSQ
Possible marks
1 or 2
Negative marking
No negative marking and no partial marking
NAT
Possible marks
1 or 2
Negative marking
No negative marking
Syllabus Breakdown
GATE ES Syllabus 2027 - Official Section-wise Topics
The tables below preserve the section order and complete topic coverage published by IIT Madras for the GATE 2027 ES paper. Use each table as a study and revision checklist, and verify any later corrigendum against the official PDF.
Section 1: Mathematics Foundation
| Topic area | Official syllabus coverage |
|---|---|
| Linear Algebra | Determinants and matrices, Systems of linear equations, Eigenvalues and eigenvectors. |
| Calculus | Functions, Limit, Continuity, Differentiability, Local maxima and minima, Taylor series, Tests for convergence, Definite and indefinite integrals, Application of definite integral to obtain area and volume, Partial and total derivatives, Linear and non-linear first order ordinary differential equations (ODE). |
| Numerical Methods | Approximation, errors, accuracy and precision in numerical methods; Numerical solutions (roots) of linear and non -linear algebraic equations; Interpolation and curve fitting - Least square approximation, Newton’s and Lagrange polynomials; Numerical differentiation and integration - trapezoidal and Simpson’s rule; Numerical solution of ordinary differential equations - single and multi-step methods. |
| Probability and Statistics | Descriptive statistics, Measurement of central tendency, Dispersion, Skewness and kurtosis, Probability concepts, Conditional probability, Bayes theorem, Risk and reliability, Probability distributions, Correlation, Single and multiple regression models, Hypothesis testing (t-test, F-test, chi-square test). |
| Topic area | Official syllabus coverage |
|---|---|
| Linear Algebra | Determinants and matrices, Systems of linear equations, Eigenvalues and eigenvectors. |
| Calculus | Functions, Limit, Continuity, Differentiability, Local maxima and minima, Taylor series, Tests for convergence, Definite and indefinite integrals, Application of definite integral to obtain area and volume, Partial and total derivatives, Linear and non-linear first order ordinary differential equations (ODE). |
| Numerical Methods | Approximation, errors, accuracy and precision in numerical methods; Numerical solutions (roots) of linear and non -linear algebraic equations; Interpolation and curve fitting - Least square approximation, Newton’s and Lagrange polynomials; Numerical differentiation and integration - trapezoidal and Simpson’s rule; Numerical solution of ordinary differential equations - single and multi-step methods. |
| Probability and Statistics | Descriptive statistics, Measurement of central tendency, Dispersion, Skewness and kurtosis, Probability concepts, Conditional probability, Bayes theorem, Risk and reliability, Probability distributions, Correlation, Single and multiple regression models, Hypothesis testing (t-test, F-test, chi-square test). |
Section 2: Environmental Chemistry
| Topic area | Official syllabus coverage |
|---|---|
| Fundamentals of Environmental Chemistry | Covalent and ionic bonding; Chemical equations, concentration and activity; Structure and chemistry of organic molecules; Chemical equilibria; Thermodynamics and kinetics of chemical reactions. |
| Principles of Water Chemistry | Water quality parameters and their measurement; Acid -base equilibria; Buffer solution; Carbonate equilibrium; Solubility of gases in water; Complexation, precipitation, and redox reactions; Inorganic and organic contaminants. |
| Soil Chemistry | Organic matter, nitrogen, phosphorous, potassium, cation exchange capacity, base saturation, and sodium absorption ratio. |
| Atmospheric Chemistry | Composition of the atmosphere; Reactivity of trace substances in the atmosphere; Chemistry of ozone formation. |
| Topic area | Official syllabus coverage |
|---|---|
| Fundamentals of Environmental Chemistry | Covalent and ionic bonding; Chemical equations, concentration and activity; Structure and chemistry of organic molecules; Chemical equilibria; Thermodynamics and kinetics of chemical reactions. |
| Principles of Water Chemistry | Water quality parameters and their measurement; Acid -base equilibria; Buffer solution; Carbonate equilibrium; Solubility of gases in water; Complexation, precipitation, and redox reactions; Inorganic and organic contaminants. |
| Soil Chemistry | Organic matter, nitrogen, phosphorous, potassium, cation exchange capacity, base saturation, and sodium absorption ratio. |
| Atmospheric Chemistry | Composition of the atmosphere; Reactivity of trace substances in the atmosphere; Chemistry of ozone formation. |
Section 3: Environmental Microbiology
| Topic area | Official syllabus coverage |
|---|---|
| Prokaryotic and Eukaryotic Microorganisms | Characteristics of diverse groups of microorganisms; Classification of microorganisms; Microbial diversity; Role of microorganisms in wastewater treatment, bioremediation and biogeochemical cycling. |
| Cell Chemistry and Cell Biology | Structure of proteins, nucleic acid (DNA & RNA), lipids and polysaccharides; Structure of cell; Structure and function of cytoplasmic membrane, cell wall, outer membrane, glycocalyx; antimicrobial resistance, quorum sensing. |
| Microbial Metabolism | Anabolism and catabolism; Phosphorylation; Glycolysis; TCA cycle; Electron transport chain; Fermentation; Anaerobic respiration; Energy balances; Enzymes and Enzyme kinetics. |
| Growth and Control of Microorganisms | Bacterial nutrition and growth; Specific growth rate and doubling time; Monod’s model; Types of culture media; Batch and continuous culture; Effects of environmental factors on growth; Control of microbes using physical and chemical methods. |
| Microbiology and Health | Pathogens and modes of transmission; Indicator organisms; Quantification of coliforms using MPN and membrane filtration techniques. |
| Topic area | Official syllabus coverage |
|---|---|
| Prokaryotic and Eukaryotic Microorganisms | Characteristics of diverse groups of microorganisms; Classification of microorganisms; Microbial diversity; Role of microorganisms in wastewater treatment, bioremediation and biogeochemical cycling. |
| Cell Chemistry and Cell Biology | Structure of proteins, nucleic acid (DNA & RNA), lipids and polysaccharides; Structure of cell; Structure and function of cytoplasmic membrane, cell wall, outer membrane, glycocalyx; antimicrobial resistance, quorum sensing. |
| Microbial Metabolism | Anabolism and catabolism; Phosphorylation; Glycolysis; TCA cycle; Electron transport chain; Fermentation; Anaerobic respiration; Energy balances; Enzymes and Enzyme kinetics. |
| Growth and Control of Microorganisms | Bacterial nutrition and growth; Specific growth rate and doubling time; Monod’s model; Types of culture media; Batch and continuous culture; Effects of environmental factors on growth; Control of microbes using physical and chemical methods. |
| Microbiology and Health | Pathogens and modes of transmission; Indicator organisms; Quantification of coliforms using MPN and membrane filtration techniques. |
Section 4: Water Resources and Environmental Hydraulics
| Topic area | Official syllabus coverage |
|---|---|
| Global Water Resources | Structure, properties and distribution of water; Threats to water resources; Water conservation. |
| Surface Water Resources | Hydrological cycle and water balance - precipitation, infiltration, evapotranspiration, runoff; Flow hydrographs; Unit hydrographs; Stage -discharge relationship; Reservoir capacity; Surface water management; Rain water harvesting and storage. |
| Groundwater Resources | Geologic formations as aquifers; Vadose and saturated zones; Confined and unconfined aquifers and their parameters - porosity, permeability, transmissivity and storage coefficient; Darcy’s law and applications; Steady state well hydraulics. |
| Environmental Hydraulics | Concepts of mechanics; Properties of fluids; Pressure measurement; Hydrostatic force on surfaces; Buoyancy and flotation; Laminar and turbulent flow; Flow through pipes; Pipe networks; Forces on immersed bodies; Flow measurement in channels and pipes; Kinematics of flow; Continuity, momentum and energy equations; Channel hydraulics - specific energy, critical flow, hydraulic jump, rapid and gradually varied flow; Design of lined channels. |
| Topic area | Official syllabus coverage |
|---|---|
| Global Water Resources | Structure, properties and distribution of water; Threats to water resources; Water conservation. |
| Surface Water Resources | Hydrological cycle and water balance - precipitation, infiltration, evapotranspiration, runoff; Flow hydrographs; Unit hydrographs; Stage -discharge relationship; Reservoir capacity; Surface water management; Rain water harvesting and storage. |
| Groundwater Resources | Geologic formations as aquifers; Vadose and saturated zones; Confined and unconfined aquifers and their parameters - porosity, permeability, transmissivity and storage coefficient; Darcy’s law and applications; Steady state well hydraulics. |
| Environmental Hydraulics | Concepts of mechanics; Properties of fluids; Pressure measurement; Hydrostatic force on surfaces; Buoyancy and flotation; Laminar and turbulent flow; Flow through pipes; Pipe networks; Forces on immersed bodies; Flow measurement in channels and pipes; Kinematics of flow; Continuity, momentum and energy equations; Channel hydraulics - specific energy, critical flow, hydraulic jump, rapid and gradually varied flow; Design of lined channels. |
Section 5: Water & Wastewater Treatment and Management
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Water and wastewater quality parameters; Eutrophication and thermal stratification in lakes; River pollution - Oxygen sag curve. |
| Official coverage | Water treatment methods — screening, sedimentation with and without coagulation, filtration, desalination, disinfection; Water distribution and storage. |
| Official coverage | Point and non -point sources of wastewater; Population forecasting methods; Design of sewer and storm water sewers; Sewer appurtenances; Preliminary, primary, secondary and tertiary sewage treatment; Sludge generation, processing and disposal methods; Sewage farming. |
| Official coverage | Sources and characteristics of industrial effluents; Concept of Common Effluent Treatment Plants (CETP); Wastewater recycling and zero liquid discharge. |
| Kinetics and reactor design | Mass and energy balance, Order and rate of reactions, Batch reactors, Completely mixed flow reactors, Plug flow reactors. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Water and wastewater quality parameters; Eutrophication and thermal stratification in lakes; River pollution - Oxygen sag curve. |
| Official coverage | Water treatment methods — screening, sedimentation with and without coagulation, filtration, desalination, disinfection; Water distribution and storage. |
| Official coverage | Point and non -point sources of wastewater; Population forecasting methods; Design of sewer and storm water sewers; Sewer appurtenances; Preliminary, primary, secondary and tertiary sewage treatment; Sludge generation, processing and disposal methods; Sewage farming. |
| Official coverage | Sources and characteristics of industrial effluents; Concept of Common Effluent Treatment Plants (CETP); Wastewater recycling and zero liquid discharge. |
| Kinetics and reactor design | Mass and energy balance, Order and rate of reactions, Batch reactors, Completely mixed flow reactors, Plug flow reactors. |
Section 6: Air and Noise Pollution
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Structure and composition of the atmosphere; sources (natural and anthropogenic); Atmospheric processes (emission, transformation, transport, removal); Indoor air pollution; Effects on health and environment; Air pollution: gases and particulate matter; Air quality standards; Primary and secondary pollutants; Criteria pollutants; primary and secondary pollutants; ambient and emission standards; air quality indices; visibility and radiative effects. |
| Particulate Pollutants | Measurement and control methods; Control of particulate air pollutants using gravitational settling chambers, cyclone separators, wet scrubbers, fabric filters (Baghouse filter), electrostatic precipitators (ESP). |
| Gaseous Pollutants | Measurement and control methods; Control of gaseous contaminants: absorption, adsorption, condensation and combustion; Control of sulphur oxides, nitrogen oxides, carbon monoxide, and hydrocarbons; Diffusion, Fick’s law and interfacial mass transfer. Vehicular emission control systems, including diesel particulate filters (DPFs), catalytic converters, and fuel standards. |
| Air Quality Management | Point, line and area sources; Inventory; Meteorology and dispersion; atmospheric stability and inversion, mixing height, wind rose diagrams, Gaussian plume dispersion modelling, and topographic influences. |
| Noise Pollution | Sources; Health effects; Standards; Measurement parameters (sound pressure level, equivalent continuous sound level Leq, day-night level Ldn); frequency analysis; and control and mitigation methods. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Structure and composition of the atmosphere; sources (natural and anthropogenic); Atmospheric processes (emission, transformation, transport, removal); Indoor air pollution; Effects on health and environment; Air pollution: gases and particulate matter; Air quality standards; Primary and secondary pollutants; Criteria pollutants; primary and secondary pollutants; ambient and emission standards; air quality indices; visibility and radiative effects. |
| Particulate Pollutants | Measurement and control methods; Control of particulate air pollutants using gravitational settling chambers, cyclone separators, wet scrubbers, fabric filters (Baghouse filter), electrostatic precipitators (ESP). |
| Gaseous Pollutants | Measurement and control methods; Control of gaseous contaminants: absorption, adsorption, condensation and combustion; Control of sulphur oxides, nitrogen oxides, carbon monoxide, and hydrocarbons; Diffusion, Fick’s law and interfacial mass transfer. Vehicular emission control systems, including diesel particulate filters (DPFs), catalytic converters, and fuel standards. |
| Air Quality Management | Point, line and area sources; Inventory; Meteorology and dispersion; atmospheric stability and inversion, mixing height, wind rose diagrams, Gaussian plume dispersion modelling, and topographic influences. |
| Noise Pollution | Sources; Health effects; Standards; Measurement parameters (sound pressure level, equivalent continuous sound level Leq, day-night level Ldn); frequency analysis; and control and mitigation methods. |
Section 7: Solid and Hazardous Waste Management
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Integrated solid waste management; Waste hierarchy; Rules and regulations for solid waste management in India. |
| Municipal solid waste management | Sources, generation, characteristics, collection, segregation, and transportation, waste processing and disposal (including reuse options, biological methods, energy recovery processes and landfilling), waste-to-energy technologies, circular economy principles, life-cycle energy analysis, decentralized renewable systems, and urban metabolism. |
| Hazardous waste management | Characteristics, generation, fate of materials in the environment, treatment and disposal. Soil contamination and leaching of contaminants into groundwater. |
| Official coverage | Management of biomedical waste, plastic waste, waste from energy sector (solar/wind/batteries etc), C&D waste and E-waste: Sources, generation and characteristics; Waste management practices including storage, collection and transfer. |
| Topic area | Official syllabus coverage |
|---|---|
| Official coverage | Integrated solid waste management; Waste hierarchy; Rules and regulations for solid waste management in India. |
| Municipal solid waste management | Sources, generation, characteristics, collection, segregation, and transportation, waste processing and disposal (including reuse options, biological methods, energy recovery processes and landfilling), waste-to-energy technologies, circular economy principles, life-cycle energy analysis, decentralized renewable systems, and urban metabolism. |
| Hazardous waste management | Characteristics, generation, fate of materials in the environment, treatment and disposal. Soil contamination and leaching of contaminants into groundwater. |
| Official coverage | Management of biomedical waste, plastic waste, waste from energy sector (solar/wind/batteries etc), C&D waste and E-waste: Sources, generation and characteristics; Waste management practices including storage, collection and transfer. |
Section 8: Global and Regional Environmental Issues
| Topic area | Official syllabus coverage |
|---|---|
| Global effects of air pollution | Greenhouse gases, radiative forcing and global warming potential (GWP), climate change, urban heat islands, acid rain, ozone hole. Ecology and various ecosystems; Biodiversity; Factors influencing increase in population, energy consumption, and environmental degradation. |
| Topic area | Official syllabus coverage |
|---|---|
| Global effects of air pollution | Greenhouse gases, radiative forcing and global warming potential (GWP), climate change, urban heat islands, acid rain, ozone hole. Ecology and various ecosystems; Biodiversity; Factors influencing increase in population, energy consumption, and environmental degradation. |
Section 9: Environmental Management and Sustainable Development
| Topic area | Official syllabus coverage |
|---|---|
| Environmental Management Systems; ISO14000 series; Environmental Auditing | Environmental Impact Assessment; Life cycle assessment; Human health risk assessment; Occupational Health and Hygiene, Physical & Chemical Hazards. |
| Environmental Law and Policy | Objectives; Polluter pays principle, Precautionary principle; The Water and Air Acts with amendments; The Environment (Protection) Act (EPA) 1986; National Green Tribunal Act, 2010; National Environment Policy; Principles of International Law and International treaties. |
| Energy and Environment | Energy Sources: Overview of resources and reserves; Renewable and non-renewable energy sources; Energy-Environment nexus. |
| Sustainable Development | Definition and concepts of sustainable development; Sustainable development goals; Hurdles to sustainability; Environment and economics; carbon pricing, emission trading, Environmental, Social, and Governance (ESG) frameworks. |
| Topic area | Official syllabus coverage |
|---|---|
| Environmental Management Systems; ISO14000 series; Environmental Auditing | Environmental Impact Assessment; Life cycle assessment; Human health risk assessment; Occupational Health and Hygiene, Physical & Chemical Hazards. |
| Environmental Law and Policy | Objectives; Polluter pays principle, Precautionary principle; The Water and Air Acts with amendments; The Environment (Protection) Act (EPA) 1986; National Green Tribunal Act, 2010; National Environment Policy; Principles of International Law and International treaties. |
| Energy and Environment | Energy Sources: Overview of resources and reserves; Renewable and non-renewable energy sources; Energy-Environment nexus. |
| Sustainable Development | Definition and concepts of sustainable development; Sustainable development goals; Hurdles to sustainability; Environment and economics; carbon pricing, emission trading, Environmental, Social, and Governance (ESG) frameworks. |
Download Official PDFs & Question Papers
Official GATE ES Syllabus 2027 PDF
Prepare for Graduate Aptitude Test in Engineering
Frequently Asked Questions
Use the featured PDF button on this page. It opens the database-hosted copy of the official IIT Madras ES syllabus.
Yes. General Aptitude is compulsory in every GATE 2027 test paper and carries 15 marks.
The paper uses Multiple Choice Questions, Multiple Select Questions and Numerical Answer Type questions carrying one or two marks.
Negative marking applies only to incorrect MCQs. MSQ and NAT questions have no negative marking, and MSQs have no partial marking.
Follow the official section order, complete topic-level concepts and examples, solve previous-year questions after each unit, and use full-length mock tests only after completing the major sections.