IES Exam 2021: Notification, Registration Date, Syllabus, Salary & Eligibility

IES Exam 2021 Notification, Syllabus, Salary, Exam Pattern

IES Exam 2021: The Indian Engineering Service (IES) is one of the most demanding career options for engineering graduates in India.

The Engineering Services Examination, commonly known as ESE, is conducted annually by UPSC for the recruitment of engineers in four domains i.e. Civil, Mechanical, Electrical and Electronics and Telecommunications for technically managerial positions.

Due to the highly competitive selection process, IES officers hold high honours and positions and are indispensable for managing and implementing activities in diverse technical and managerial fields.

In this Article you’ll get know about the latest exam dates of IES Exam 2021 along with the Syllabus, Exam Pattern, Salary and Eligibility Criteria for IES Exam.

Also Checkout IAS 2021 Exam

  • The IES Exam Notification 2021 is released by the UPSC on 4th September, 2020. 
  • The Online Recruitment for IES 2021 begins from 7th of April, 2021.
  • According to the latest Notification the IES Exam 2021 is schedule on 16th July, 2021.
  • The IES Exam consists of a two-stage written test, followed by an interview. ESE is considered one of the toughest examinations in India due to low positions and high competition.

IES 2021 Exam: Important Dates

Below mentioned are some important dates related to IES Exam 2021, that every applicant must know, who are willing to appear in the examination.

IES Notification release DateSeptember, 2021
IES Admit Card 2021June, 2021
(ESE) Engineering Services Exam 2021 (Prelims) July, 2021
(ESE) Engineering Services Examination 2021 (Main)October, 2021
Declaration of IES Prelims ResultSeptember, 2021
Declaration of IES Main ResultDecember, 2021

IES Salary 2021: 7th Pay Commission

The IES officer holds one of the leading positions in India. UPSC has appointed IES Officers in various departments under the Government of India. The following is complete information about the updated IES payment structure on this page. You can get the details of IES Salary, Benefits, Grade Pay, TA, DA, HRA after the 7th pay commission.

It should be notified that IES officer salary in India is similar to the other Indian civil service officials in different departments.

There may be differences in total sum, as there are different wages and allowances or policies according to the profile, candidates can check the details of the salary of IES officer in the below give table.

GradePay ScaleGrade Pay
Junior Time ScaleRs.15600 – 39100/-8000/5400
Senior Time ScaleRs.15600/- 39100/-Rs.6600/-
Junior Administrative ScaleRs.15600-39100/-Rs.7600/-
Selection GradeRs.37400-6700/-Rs.8700/-
Super Time ScaleRs.37400 – Rs.67000Rs.8700/-
Apex Pay ScaleRs.80,000/-
Cabinet Secretary GradeRs,90,000/-

IES Exam Pattern 2021:

Preliminary Examination – Two objective types (multiple choice) question papers and a maximum of 500 marks (Paper 1 – 200 marks and Paper II – 300 marks).

Stage-I: Engineering Services (Preliminary / Stage-I) Examination (Objective Type Papers) for selection of candidates for Stage-II.

Stage-II: Engineering Services (Main / Stage-II) Examination Contain Conventional Type Papers.

Stage-III: Personality test.

In the year only those candidates who have been declared by the Commission have qualified in the Preliminary / Stage-I examination, who will be eligible for admission to the Main / Stage-II examination.

IES Exam Pattern Stage I (Prelims):

The marks obtained in the Preliminary / Stage-I Examination by the candidates who have been declared eligible for admission to the Main / Stage-II Examination will be counted to determine the final order of their qualification. The Table Shows the Exam Pattern of IES 2021.

SubjectDurationMaximum Marks
Category-I Civil Engineering  
Paper-I (General Studies and Engineering Aptitude)2 Hrs200
Paper-II (Civil Engineering)3 Hrs300
Total 500
Category-II Mechanical Engineering  
Paper-I (General Studies and Engineering Aptitude)2 Hrs200
Paper-II (Mechanical Engineering)3 Hrs300
Total 500
Category-III Electrical Engineering  
Paper-I (General Studies and Engineering Aptitude)2 Hrs200
Paper-II (Electrical Engineering)3 Hrs300
Total 500
Category-IV Electronics & Telecommunication Engineering  
Paper-I (General Studies and Engineering Aptitude)2 Hrs200
Paper-II (Electronics & Telecommunication Engineering)3 Hrs300
Total 500

IES Exam Syllabus 2021: Prelims

  • Current issues of national and international importance relating to social, economic and industrial development
  • Engineering Aptitude covering Logical reasoning and Analytical ability
  •  Engineering Mathematics and Numerical Analysis
  • General Principles of Design, Drawing, Importance of Safety
  • Standards and Quality practices in production, construction, maintenance and services
  • Basics of Energy and Environment: Conservation, Environmental pollution and degradation, Climate change, Environmental impact assessment
  • Basics of Project Management
  • Basics of Material Science and Engineering
  • Information and Communication Technologies (ICT) based tools and their applications in Engineering such as networking, e-governance and technology-based education.
  • Ethics and values in the engineering profession

Note: The paper in General Studies and Engineering Aptitude will include knowledge of relevant topics as may be expected from an engineering graduate, without special study. Questions from all the 10 topics mentioned above shall be set. Marks for each Topic may range from 5% to 15% of the total marks in the paper.

IES Exam Pattern Stage II (Mains):

The number of candidates appearing in the Main / Stage-II examination through this examination will be approximately six to seven times the total estimated number of vacancies to be filled in the year.

S. NoBranchPapersDurationMarksTotal Marks
ICivil engineeringPaper-I3hrs300600
IIMechanical engineeringPaper-I3hrs300600
IIIElectrical engineeringPaper-I3hrs300600
IVElectronic and Telecommunication engineeringPaper-I3hrs300600

IES Exam Syllabus 2021: Mains

  1. building materials: Stone, Lime, Glass, Plastics, Steel, FRP, Ceramics, Aluminium, Fly Ash, Basic Admixtures, Timber, Bricks and Aggregates: Classification, properties and selection criteria;
    Cement: Types, Composition, Properties, Uses, Specifications and various Tests; Lime & Cement Mortars and Concrete: Properties and various Tests; Design of Concrete Mixes: Proportioning of aggregates and methods of mix design.
  2. Solid Mechanics: Elastic constants, Stress, Plane stress, Strains, plane strain, Mohr’s circle of stress and strain, Elastic theories of failure, Principal Stresses, Bending, Shear and Torsion.
  3. Structural Analysis: Basics of the strength of materials, Types of stresses and strains, Bending moments and shear force, concepts of bending and shear stresses; Analysis of determinate and indeterminate structures; Trusses, beams, plane frames; Rolling loads, Influence Lines, Unit load method & other methods; Free and Forced vibrations of single degree and multi-degree freedom system; Suspended Cables; Concepts and use of Computer-Aided Design.
  4. Design of Steel Structures: Principles of Working Stress methods, Design of tension and compression members, Design of beams and beam-column connections, built-up sections, Girders, Industrial roofs, Principles of Ultimate load design.
  5. Design of Concrete and Masonry structure: Limit state design for bending, shear, axial compression and combined forces; Design of beams, Slabs, Lintels, Foundations, Retaining walls, Tanks, Staircases: Principles of pre-stressed concrete design including materials and methods; Earthquake resistant design of structures; Design of Masonry Structure.
  6. Construction Practice, Planning and Management: Construction – Planning, Equipment, Site investigation and Management including Estimation with latest project management tools and network analysis for different Type of works; Analysis of Rates of various types of works; Tendering Process and Contract Management, Quality Control, Productivity, Operation Cost; Land acquisition; Labour safety and welfare.


  1.  The flow of Fluids, Hydraulic Machines and Hydro Power:
    (a) Fluid Mechanics, Open Channel Flow, Pipe Flow – Fluid properties; Dimensional Analysis and Modeling; Fluid dynamics including flow kinematics and measurements; Flow net; Viscosity, Boundary layer and control, Drag, Lift, Principles in open channel flow, Flow controls, Hydraulic jump; Surges; Pipe networks.
    (b) Hydraulic Machines and Hydropower Various pumps, Air vessels, Hydraulic turbines – types, classifications & performance parameters; Powerhouse – classification and layout, storage, pondage, control of supply.
  2. Hydrology and Water Resources Engineering:
    Hydrological cycle, Ground Water Hydrology, Well hydrology and related data analysis; Streams and their gauging; River morphology; Flood, drought and their management; Capacity of Reservoirs.
    Water Resources Engineering: Multipurpose uses of Water, River basins and their potential; Irrigation systems, water demand assessment; Resources storages and their yields; Waterlogging, canal and drainage design, Gravity dams, falls, weirs, Energy dissipaters, barrage Distribution works, Cross drainage works and head-works and their design; Concepts in canal design, construction & maintenance; River training, measurement and analysis of rainfall.
  3.  Environmental Engineering : 
    (a) Water Supply Engineering: Sources, Estimation, quality standards and testing of water and their treatment, Rural, Institutional and industrial water supply; Physical, chemical and biological characteristics and sources of water, Pollutants in water and its effects, Estimation of water demand; Drinking water Standards, Water Treatment Plants, Water distribution networks.
    (b) Waste Water Engineering: Planning & design of domestic wastewater, sewage collection and disposal; Plumbing Systems. Components and layout of sewerage system; Planning & design of Domestic Waste-water disposal system; Sludge management including treatment, disposal and re-use of treated effluents; Industrial waste waters and Effluent Treatment Plants including institutional and industrial sewage management.
    (c) Solid Waste Management: Sources & classification of solid wastes along with planning & design of its management system; Disposal system, Beneficial aspects of wastes and Utilization by Civil Engineers.
    (d) Air, Noise pollution and Ecology: Concepts & general methodology.
  4. Geotechnical Engineering and Foundation Engineering : 
    Geo-technicalEngineering: Soil exploration – planning & methods, Properties of soil, classification, various tests and inter-relationships; Permeability & Seepage, Compressibility, consolidation and Shearing resistance, Earth pressure theories and stress distribution in soil; Properties and uses of geo-synthetics.
    Foundation Engineering: Type of foundations & selection criteria, bearing capacity, settlement analysis, design and testing of shallow & deep foundations; Slope stability analysis, Rathenembankments, Dams and Earth retaining structure: types, analysis and design, Principles of ground
  5. Surveying and Geology: 
    Surveying: Classification of surveys, various methodologies, instruments of analysis of measurements of distances, elevation and directions; Field astronomy, Global Positioning System; Map preparation; Photogrammetry; Remote sensing concepts; Survey Layout for culverts, canals, bridges, road/railway alignment and buildings, Setting out of.
    Geology: Basic knowledge of Engineering geology & its application in
  6. Transportation Engineering :
    Highways  Planning & construction methodology, Alignment and geometric design; Traffic Surveys and Controls; Principles of Flexible and Rigid pavements design.
    Tunnelling  Alignment, methods of construction, disposal of muck, drainage, lighting and ventilation.
    Railways Systems – Terminology, Planning, designs and maintenance practices, track modernization.
    Harbours – Terminology, layouts and planning.
    Airports – Layout, planning & design.
  1. Fluid Mechanics: Basic Concepts and Properties of Fluids, Manometry, Fluid Statics, Buoyancy, Equations of Motion, Bernoulli’s equation and applications, Viscous flow of incompressible fluids, Laminar and Turbulent flows, Flow through pipes and head losses in pipes.
  2. Thermodynamics and Heat transfer:
    Thermodynamic systems and processes; properties of pure substance; Zeroth, First and Second Laws of Thermodynamics; Entropy, Irreversibility and availability; analysis of thermodynamic cycles related to energy conversion: Rankine, Otto, Diesel and Dual Cycles: ideal and real gases; compressibility factor; Gas mixtures.
    Modes of heat transfer, Steady and unsteady heat conduction, Thermal resistance, Fins, Free and forced convection, Correlations for convective heat transfer, Radiative heat more trans – Radiation heat transfer co-efficient; boiling and condensation, Heat exchanger performance analysis.
  3. IC Engines, Refrigeration and Air conditioning: SI and CI Engines, Engine Systems and Components, Performance characteristics and testing of IC Engines; Fuels; Emissions and Emission Control, Vapour compression refrigeration, Refrigerants and Working cycles, Compressors, Condensers, Evaporators and Expansion devices, Other types of refrigeration systems like Vapour Absorption, Vapour jet, thermoelectric and Vortex tube refrigeration. Psychometric properties and processes, Comfort chart, Comfort and industrial air conditioning, Load calculations and Heat pumps.
  4. Turbo Machinery: Reciprocating and Rotary pumps, Pelton wheel, Kaplan and Francis Turbines, velocity diagrams, Impulse and Reaction principles, Steam and Gas Turbines, Theory of Jet Propulsion – Pulse jet and Ram Jet Engines, Reciprocating and Rotary Compressors – Theory and Applications.
  5. Power Plant Engineering: Rankine and Brayton cycles with regeneration and reheat, Fuels and their properties, Flue gas analysis, Boilers, steam turbines and other power plant components like condensers, air ejectors, electrostatic precipitators and cooling towers – their theory and design, types and applications.
  6. Renewable Sources of Energy: Solar Radiation, Solar Thermal Energy collection – Flat Plate and focusing collectors their materials and performance. Solar Thermal Energy Storage, Applications – heating, cooling and Power Generation; Solar Photovoltaic Conversion; Harnessing of Wind Energy, Bio-mass and Tidal Energy – Methods and Applications, Working principles of Fuel Cells.


  1. Engineering Mechanics: Analysis of System of Forces, Friction, Centroid and Centre of Gravity, Dynamics; Stresses and Strains – Compound Stresses and Strains, Bending Moment and Shear Force Diagrams, Theory of Bending Stresses – Slope and