GATE 2025 Environmental Science & Engineering Syllabus PDF - Download GATE Environmental Science & Engineering Syllabus Topic wise

Updated By Rupsa on 10 Sep, 2024 12:13

IIT Roorkee has released the GATE 2025 syllabus PDF for all 30 papers. There have been no changes in the GATE syllabus 2025. Access the GATE syllabus 2025 PDF from this page.

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GATE 2025 Syllabus for ES

IIT Roorkee has released the GATE Environmental Science and Engineering syllabus 2025 along with other subjects. Candidates planning to take the Environmental Science and Engineering (ES) exam should check the official GATE ES syllabus 2025 PDF provided on this page to plan their preparation strategy better. They can also find details about the GATE 2025 ES syllabus topics, important chapters, and sectional weightage. The GATE 2025 Environmental Science and Engineering syllabus includes three sections, namely General Aptitude (15 marks), Engineering Mathematics (13 marks), and Subject Questions (72 marks), making a total of 100 marks. The GATE ES syllabus 2025 covers a wide range of topics related to the Environmental Science and Engineering principles. It includes subjects like Mathematics, Environmental Chemistry, Microbiology, Water Resources, Air and Noise Pollution, Waste Management, and Sustainable Development. Explore the GATE syllabus 2025 for Environmental Science and Engineering in detail in the following section.

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GATE ES Syllabus 2025 Section-Wise Topics

The GATE Environmental Science and Engineering syllabus 2025 is a guide for candidates to prepare well for the exam. It includes a wide range of topics and sub topics of Environmental Science and Engineering. Mastering the topics in the GATE ES 2025 syllabus is important for candidates who want to crack the exam with a high score. Here is a detailed look at the section-wise GATE 2025 Environmental Science and Engineering syllabus:-

Section

Topics

Sub-Topics

Section 1: Mathematics Foundation

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.

Differential Equations

Linear and non-linear first order ordinary differential equations (ODE), Higher order linear ODEs with constant coefficients, Cauchy’s and Euler’s equations, Laplace transform and its application in solving linear ODEs.

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

Fundamentals of Environmental Chemistry

Covalent and ionic bonding; Chemical equations, concentration and activity; Structure and chemistry of organic molecules; Radioactivity of elements; Chemical equilibria; Thermodynamics and kinetics of chemical reactions.

Principles of Water Chemistry

Water quality parameters and their measurement; Acid-base equilibria; Buffer solution; Carbonate system; Solubility of gases in water; Complexation, precipitation, and redox reactions; Inorganic and organic contaminants in water and their speciation.

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; Urban atmosphere—smog and particulate pollution; Chemistry of ozone formation; Chemistry of stratosphere.

Section 3: Environmental Microbiology

Prokaryotic and Eukaryotic Microorganisms

Characteristics of diverse groups of microorganisms; Classification of microorganisms; Microbial diversity; Plant-microbe and soil-microbe interactions; 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; Bonds in biomolecules; Stereoisomerism in biomolecules; Structure of cell; Structure and function of cytoplasmic membrane, cell wall, outer membrane, glycocalyx, chromosomes, endospores, storage products, mitochondria and chloroplasts.

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

Global Water Resources

Structure, properties and distribution of water; Water quality; 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; Reservoir and channel routing; Surface run-off models; 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; Boundary layer theory; 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 and unlined channels.

Section 5: Water & Wastewater Treatment and Management

Water and Wastewater Quality Parameters

Eutrophication and thermal stratification in lakes; River pollution - Oxygen sag curve.

Water Treatment Methods

Screening, sedimentation with and without coagulation, filtration, desalination, disinfection; Water distribution and storage.

Wastewater Sources and Management

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.

Industrial Effluents and CETP

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

Air Pollution

Structure of the atmosphere; Natural and anthropogenic sources of pollution; Atmospheric sources, sinks, transport; Indoor air pollution; Effects on health and environment; Air pollution: gases and particulate matter; Air quality standards; Primary and secondary pollutants; Criteria pollutants, ambient and source standards, air quality indices, visibility.

Particulate Pollutants

Measurement and control methods; Control of particulate air pollutants using gravitational settling chambers, cyclone separators, wet collectors, fabric filters (Bag-house 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; Vapour-liquid and vapour-solid equilibria; Diffusion, Fick’s law and interfacial mass transfer. Automotive emission controls, fuel quality, diesel particulate filters, catalytic convertors.

Air Quality Management

Point, line and area sources; Inventory; Influence of meteorology - wind rose diagrams, stability, mixing height, topography, dispersion modelling, monitoring.

Noise Pollution

Sources; Health effects; Standards; Measurement and control methods.

Section 7: Solid and Hazardous Waste Management

Solid Waste Management

Integrated solid waste management; Waste hierarchy; Rules and regulations for solid waste management in India.

Municipal solid waste management: Sources, generation, characteristics, collection and transportation, waste processing and disposal (including reuse options, biological methods, energy recovery processes and landfilling).

Hazardous Waste Management

Characteristics, generation, fate of materials in the environment, treatment and disposal. Soil contamination and leaching of contaminants into groundwater. Management of biomedical waste, plastic waste and E-waste: Sources, generation and characteristics; Waste management practices including storage, collection and transfer.

Section 8: Global and Regional Environmental Issues

Global Effects of Air Pollution

Greenhouse gases, global warming, climate change, urban heat islands, acid rain, ozone hole.

Ecology and Ecosystems

Ecology and various ecosystems; Biodiversity; Factors influencing increase in population, energy consumption, and environmental degradation.

Section 9: Environmental Management and Sustainable Development

Environmental Management Systems

Environmental Management Systems; ISO14000 series; Environmental Auditing: Environmental Impact Assessment; Life cycle assessment; Human health risk assessment.

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.

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GATE ES Syllabus 2025 for General Aptitude

The General Aptitude part of GATE Environmental Science and Engineering syllabus 2025 is designed to test a candidate's skills in various areas like problem-solving and comprehension. The syllabus is divided into four main categories: Verbal Aptitude, Quantitative Aptitude, Analytical Aptitude, and Spatial Aptitude. It ensures that candidates are well-prepared in their aptitude skills. Aspirants can check the General Aptitude syllabus for GATE 2025 ES paper below:-

Sections

Topics

Quantitative Aptitude

Numerical Computation and Estimation: Ratios, percentages, powers, exponents, logarithms, permutations, combinations, series

Data Interpretation: Data graphs (bar graphs, pie charts, other data representations), 2D and 3D plots, maps, tables

Mensuration and Geometry

Elementary Statistics and Probability

Verbal Aptitude

Basic Vocabulary: Words, idioms, phrases in context, reading and comprehension, narrative sequencing

Basic English Grammar: Tenses, articles, adjectives, prepositions, conjunctions, verb-noun agreement, other parts of speech

Spatial Aptitude

Transformation of Shapes: Translation, rotation, scaling, mirroring, assembling, grouping

Paper Folding, Cutting, and Patterns: 2D and 3D patterns

Analytical Aptitude

Logic: Deduction and induction

Analogy

Numerical Relations and Reasoning

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GATE 2025 Environmental Science and Engineering Syllabus PDF

For aspirants preparing for the GATE Environmental Science and Engineering paper, downloading the GATE ES 2025 syllabus PDF is the first step.  It provides a detailed outline of all the topics and subtopics they need to study for the exam. Here is the direct link to download the complete GATE Environmental Science and Engineering syllabus 2025 PDF:-

GATE ES Syllabus 2025 PDF Download Link

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GATE Environmental Science and Engineering Syllabus 2025 Important Topics

For the GATE 2025 Environmental Science and Engineering exam, it is essential to study all the topics in the syllabus thoroughly. However, focusing on certain key topics can be especially beneficial as they are frequently asked in the exam. Below, we have highlighted some of these important GATE ES 2025 syllabus topics that cover the essential areas likely to appear in the paper. Prioritizing these topics can help streamline their preparation and improve their chances of scoring well.

Section 1: Mathematics Foundation

  1. Linear Algebra

    • Eigenvalues and eigenvectors

    • Determinants and matrices

  2. Calculus

    • Functions, Limits, and Continuity

    • Definite and indefinite integrals

    • Application of definite integrals to obtain area and volume

  3. Differential Equations

    • First order ordinary differential equations (ODEs)

    • Higher order linear ODEs with constant coefficients

    • Laplace transforms and their applications

  4. Probability and Statistics

    • Probability concepts and distributions.

    • Hypothesis testing (t-test, F-test, chi-square test)

    • Correlation and regression models

Section 2: Environmental Chemistry

  1. Principles of Water Chemistry

    • Water quality parameters and measurement

    • Acid-base equilibria

    • Redox reactions and chemical equilibria

  2. Atmospheric Chemistry

    • Chemistry of ozone formation

    • Urban atmosphere—smog and particulate pollution

Section 3: Environmental Microbiology

  1. Prokaryotic and Eukaryotic Microorganisms

    • Classification and characteristics

    • Role in wastewater treatment and bioremediation

  2. Microbial Metabolism

    • Fermentation and anaerobic respiration

    • Electron transport chain

Section 4: Water Resources and Environmental Hydraulics

  1. Surface Water Resources

    • Hydrological cycle components (precipitation, runoff)

    • Unit hydrographs and flow hydrographs

  2. Groundwater Resources

    • Aquifer characteristics (porosity, permeability)

    • Darcy’s law and applications

  3. Environmental Hydraulics

    • Laminar and turbulent flow

    • Continuity, momentum, and energy equations

    • Hydraulic jump and channel hydraulics

Section 5: Water & Wastewater Treatment and Management

  1. Water and Wastewater Quality Parameters

    • Eutrophication and thermal stratification

    • River pollution—Oxygen sag curve

  2. Water Treatment Methods

    • Sedimentation, filtration, and disinfection processes

  3. Wastewater Treatment

    • Preliminary, primary, secondary, and tertiary sewage treatment

    • Design and management of sewers

  4. Kinetics and Reactor Design

    • Batch reactors and completely mixed flow reactors

Section 6: Air and Noise Pollution

  1. Air Pollution

    • Structure of the atmosphere and sources of pollution

    • Air quality standards and indices

  2. Particulate and Gaseous Pollutants

    • Measurement and control methods

    • Control of sulphur oxides, nitrogen oxides, and hydrocarbons

  3. Air Quality Management
    • Dispersion modeling and meteorological influence

  4. Noise Pollution
    • Measurement, standards, and control methods

Section 7: Solid and Hazardous Waste Management

  1. Solid Waste Management

    • Integrated solid waste management principles

    • Municipal solid waste management and disposal

  2. Hazardous Waste Management

    • Treatment and disposal of hazardous and biomedical wastes

Section 8: Global and Regional Environmental Issues

  1. Global Effects of Air Pollution

    • Greenhouse gases, global warming, and climate change

    • Ozone hole and acid rain

Section 9: Environmental Management and Sustainable Development

  1. Environmental Law and Policy

    • Water and Air Acts, Environment (Protection) Act

    • National Green Tribunal Act

  2. Sustainable Development

    • Concepts and hurdles to sustainability

    • Environmental economics

GATE ES Syllabus 2025 Topic-Wise Weightage (Expected)

To prepare effectively for the GATE Environmental Science and Engineering syllabus 2025, students should prioritize sections with higher weightage, such as Mathematics Foundation, Water & Wastewater Treatment, and Air and Noise Pollution. However, it is also important to allocate time to all sections to ensure a well-rounded understanding of the syllabus. Focusing on the areas with higher weightage can help in achieving the maximum scores. Here is a look at the GATE 2025 ES syllabus topic-wise weightage:-

Section

Approximate Weightage (%)

Mathematics Foundation

12-15%

Environmental Chemistry

8-10%

Environmental Microbiology

5-7%

Water Resources & Environmental Hydraulics

10-12%

Water & Wastewater Treatment and Management

12-15%

Air and Noise Pollution

10-12%

Solid & Hazardous Waste Management

8-10%

Global & Regional Environmental Issues

5-7%

Environmental Management & Sustainable Development

8-10%

How to Prepare for GATE Environmental Science and Engineering Syllabus 2025

Preparing for an exam like GATE can feel challenging, but with the right approach, it becomes much easier. Following these tips can make a candidate's preparation more strong and boost your confidence for the GATE 2025 ES exam:-

  • Go through the entire syllabus to know what topics you need to study.

  • Use recommended textbooks and reference materials to understand the subjects better.

  • Plan your study schedule so you can cover all the topics in an organized way.

  • Practice with GATE previous year question papers to understand the question format and see which topics are often tested.

  • Take mock tests regularly to improve your preparation and manage your time better.

  • Keep reviewing important formulas and key points to remember them well.

  • Identify your weak areas through practice tests and work on improving them.

  • Take care of your health by eating well, exercising, and getting enough sleep. Stay positive and believe in your preparation.

Best Books for GATE ES Syllabus 2025

Taking the help of the right books can improve one's overall exam preparation. Here are names of some of the best books for GATE Environmenal Science and Engineering syllabus 2025 that candidates can refer to. 

Book Title

Author

Environmental Science and Engineering 

Benny Joseph

GATE Environment Science & Engineering Practice Sets 3000 + Question Answer

Diwakar Education and Hub

Objective Environmental Sciences

Dr. B. B. Singh

Reasoning and Aptitude

Nem Singh

GATE Engineering Mathematics

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