GATE Environmental Science & Engineering (ES) Question Papers: Previous year papers PDF Download

Diksha Sharma

Updated On: September 27, 2023 12:43 pm IST | GATE

Appearing for the GATE Environmental Science & Engineering (ES) 2024 exam? Check out the previous year question papers in this article.
GATE Environmental Science & Engineering (ES) Question Papers

GATE Environmental Science & Engineering (ES) Question Papers: The GATE Environmental Science & Engineering (ES) paper was added as one of the subjects in the GATE 2021 exam. Candidates who are going to appear for the GATE 2024 exam are required to practice the GATE Previous Year Question Papers as it is one of the most significant facets of the exam preparation. Being one of the most competitive engineering entrance exams, GATE 2024 will involve multiple choice, numerical answer type and multiple-select questions of varying levels of difficulty. Environmental Science & Engineering (ES) is one of the key subjects of the GATE 2024 exam.

Also read: GATE Syllabus 2024

In order to secure good marks in the GATE Environmental Science & Engineering (ES) 2024 exam, candidates must go through the GATE Environmental Science & Engineering (ES) Question Papers of the previous years which have been provided in this article. In this article, the previous year question papers of GATE Environmental Science & Engineering 2024 have been assimilated from 2021 to 2022 to help the candidates gain a basic understanding of the actual question paper.

Also read: How to Crack GATE 2024 in First Attempt?

Quick Links:

GATE Environmental Science & Engineering (ES) Syllabus 2024

GATE Reasoning & Comprehension Syllabus 2024

GATE Computer Science and Information Technology Syllabus 2024

GATE Agricultural Engineering (AG) Syllabus 2024

GATE Architecture & Planning Syllabus 2024

GATE Chemical Engineering Syllabus 2024

GATE Electrical Engineering (EE) Syllabus 2024

GATE Electronics & Communication Engineering Syllabus 2024

GATE Economics Syllabus 2024

GATE Psychology Syllabus 2024

IISc Bangalore is going to conduct the GATE 2024 exam on February 3, 4, 10 & 11, 2024. Candidates can resort to the use of the GATE previous years’ question papers to chalk out their GATE 2024 preparation strategy  and also evaluate the changes in the exam pattern of GATE 2024 over the years.

Also read: GATE Syllabus

Go through the article to access the GATE Environmental Science & Engineering (ES) Question Papers PDF of the years 2022 and 2021.

Steps to Download GATE ES Previous Years Question Papers

Candidates can easily download the previous year question papers of GATE from the official website. Candidates should take a look at the steps mentioned below for downloading the GATE (ES) question papers

Step 1 - Go to the official link - gate.iitkgp.ac.in/old_question_papers.html

Step 2 - Click on the dropdown menu available under the question paper of previous years.

Step 3 - Choose the Year and Subject from the drop down menu

Step 4: The question paper PDF will be available on the device screen for download.

Also check: GATE Sample Papers

GATE Environmental Science & Engineering (ES) Question Papers – Download PDF

Candidates appearing for the GATE ES 2024 exam can find the year-wise question paper links of GATE Environmental Science & Engineering (ES) from the sections below which will help them figure out the type of questions asked, level of difficulty of the questions, repeat value of a question amongst other aspects.

GATE Environmental Science & Engineering (ES) Question Paper 2022 PDF

Candidates can access the GATE 2022 question paper PDF of Environmental Science & Engineering (ES) which was released by IIT Kharagpur as attached in the table below.

GATE Environmental Science & Engineering (ES) Question Paper

PDF Link

Year 2022

Click Here

GATE Environmental Science & Engineering (ES) Question Paper 2021 PDF

Candidates can access the GATE 2021 question paper PDF of Environmental Science & Engineering (ES) which was released by IIT Bombay as attached in the table below.

GATE Environmental Science & Engineering (ES) Question Paper

PDF Link

Year 2021

Click Here

GATE Environmental Science & Engineering (ES) Important Questions 2024

It is necessary for the candidates to practice the important questions of GATE Environmental Science & Engineering to evaluate their level of preparations. Candidates can develop familiarity with the type of questions asked in the GATE ES exam and sharpen their skills by practicing such questions as much as possible. Some of the important questions for the GATE Environmental Science & Engineering 2024 exam have been mentioned below.

Q.1 A sewage treatment plant with a capacity of 10 million litres per day (MLD) is treating the sewage through an aerobic biological process. The inlet and outlet BOD are measured as 100 and 30 mg/l, respectively. If the mixed microbial culture has an observed biomass yield of 0.5 g Volatile Suspended Solids (VSS)/g BOD, the sludge production rate (in kg per day, rounded off to one decimal place) when the plant is operating at 80% capacity will be _________.

Q.2 The correct order of hydraulic conductivity for the geologic formations is 

(A) Aquifer > Aquitard > Aquiclude > Aquifuge 

(B) Aquifer < Aquitard < Aquiclude < Aquifuge 

(C) Aquitard > Aquifer > Aquifuge > Aquiclude 

Q.3 X is normally distributed with following data (25.8, 36.6, 26.3, 21.8, 27.2). Select the correct statement about X (tcrit, α=0.05,4 = 2.132): 

(A) Population mean < 25 with 95% confidence 

(B) Population mean < 25 with 100% confidence 

(C) Population mean > 25 with 95% confidence

 (D) Population mean > 25 with 100% confidence  

(D) Aquifer > Aquiclude >Aquitard > Aquifuge 

Q.4 Which one of the following is most commonly used raw material in flue gas desulfurization units? 

(A) Limestone 

(B) Titanium Oxide 

(C) Fenton reagent 

(D) Beryllium Oxide  

Q.5 The depth of flow (in m, rounded off to two decimal places) in a hydraulically efficient rectangular channel (n = 1/80) to carry a discharge of 64 m3/s at bed slope 0.01 is __________.

GATE 2024 Exam Pattern

IISc Bangalore has released the exam pattern of GATE 2024 exam on the official website - gate2024.iisc.ac.in. Candidates going to appear for the GATE ES 2024 paper should have clarity about the distribution of marks, total marks and the duration of the exam. 

Subject & Paper Code

General Aptitude Marks

Compulsory Marks

Subject Specific Marks

Total Marks

Total Duration 

Environmental Science & Engineering (ES) 

15

-

85*

100

180 minutes

GATE Environmental Science and Engineering 2024 paper will be conducted in online mode in English with questions carrying 1 or 2 marks. There is a provision of negative marking with respect to the multiple choice questions.

GATE  Environmental Science & Engineering (ES) - Question Pattern

The question pattern of the GATE exam is set in such a manner which evaluates the analytical and comprehensive capabilities of the candidates. Candidates will come across questions of varying nature including memory-based, application oriented, comprehensive and analytical while attempting the GATE previous year question papers. The different types of questions asked in the GATE exam based upon the previous year question papers are as follows.

  • Memory-based: Such questions are subject-oriented focusing on principles, formulas, laws and statements which are meant to evaluate the recall capacity of the candidates.
  • Comprehension - Such questions seek to evaluate the candidate’s level of understanding of their specific fields. Hence, candidates must have clarity about their basics to be able to chalk out solutions.
  • Application - Application-based questions are meant for candidates to apply their learned concepts into practice. Such questions evaluate the reasoning and calculation skills of the candidates. 
  • Analysis & Synthesis - Analysis and synthesis type questions involve images, data and diagrams analyzing which the candidates will be required to solve the problems.

GATE Environmental Science & Engineering (ES) - Section wise Important Topics

The syllabus of GATE Environmental Engineering (ES) syllabus 2024 involves a plethora of topics and sub-topics from different areas. Candidates must have  a thorough understanding of the key topics covered under the GATE ES 2024 syllabus to undertake their preparations effectively. 

Sections

Topics

Mathematics Foundation

  • Linear Algebra
  • Calculus
  • Differential Equations
  • Probability & Statistics

Environmental Chemistry

  • Fundamentals of Environmental Chemistry
  • Principles of water chemistry
  • Soil chemistry
  • Atmospheric Chemistry

Environmental Microbiology 

  • Prokaryotic and eukaryotic microorganisms
  • Cell chemistry and cell biology
  • Microbial metabolism
  • Growth and control of microorganisms
  • Microbiology and health

Water Resources and Environmental Hydraulics

  • Global Water Resources
  • Surface Water Resources
  • Groundwater Resources
  • Environmental Hydraulics

Water & Wastewater Treatment and Management 

  • Water and wastewater quality parameters
  • Water treatment methods
  • Point and non-point sources of wastewater
  • Sources and characteristics of industrial effluents
  • Kinetics and reactor design

Air and Noise Pollution 

  • Structure of the atmosphere
  • Particulate pollutants
  • Gaseous Pollutants
  • Air quality management
  • Noise pollution

Solid and Hazardous Waste Management

  • Integrated solid waste management
  • Municipal solid waste management
  • Hazardous waste management
  • Management of biomedical waste, plastic waste and E-waste
  • Soil contamination and leaching of contaminants into groundwater

Global and Regional Environmental Issues

  • Global effects of air pollution
  • Ecology and various ecosystems

Environmental Management and Sustainable Development

  • Environmental Management Systems
  • Environmental Law and Policy – Objectives
  • Energy and Environment
  • Sustainable Development

Benefits of Solving GATE Previous Year Question Papers

There are a number of advantages of attempting the previous years’ question papers of the exam. Some of the key benefits of solving the GATE previous year question papers have been mentioned below –

  • Candidates can identify their areas of strength and weaknesses, evaluate their level of preparation and make changes in their preparation plan accordingly.
  • The GATE previous year question papers provide candidates a basic idea about the actual paper and the types of possible questions.
  • Candidates can evaluate their time management skills by practicing the previous year question papers. It is necessary for them to complete the paper within the stipulated time to score good marks in the exam.
  • Candidates can find out shortcut tricks and techniques while practicing the previous year question papers which can help them save time during difficult calculations.
  • Candidates can develop awareness about the difficulty level of the exam and the kind of questions asked by solving the previous year question papers.

How to Solve Environmental Engineering (ES) Question Papers?

Being a computer-based exam, candidates have to appear for GATE 2024 in online mode. Candidates will be required to answer the questions displayed on the device screen for which they can follow the tips mentioned below. 

  • Analyze the question – Read the question carefully and ensure that you are able to grasp its meaning before beginning to solve the problem. 
  • Break down the problem – Segregate the question into smaller parts so that its easier for you to solve it. 
  • Apply formulas and equations – Apply the formulas and equations that you have learnt previously to the relevant questions and solve them.
  • Practice consistently – Attempting numerical type questions is generally time-consuming and requires an efficient skill set. Practice such questions consistently.

Apart from following a well-planned preparation strategy based upon the GATE 2024 exam pattern, candidates must also undertake the GATE 2024 Mock Test to evaluate their preparation level and time management skills. Candidates should ensure that don’t forget to take care of their health amidst their preparation for the GATE 2024 exam.

GATE Preparation Strategy 2024

It is a preliminary requirement for the aspiring candidates of the GATE 2024 exam to have a well planned out GATE 2024 preparation strategy in place before beginning their preparations for the exam. Candidates must carefully analyze the GATE syllabus 2024 and note down the topic-wise weightage. The previous year question papers, sample papers as well as mock tests are efficient tools of improving the ongoing preparation.

Also read: GATE 2024: Preparation Tips for General Aptitude Section

We hope this article has been beneficial for the candidates going to appear for the GATE ES 2024 exam. Best of Luck!

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FAQs

What is the difficulty level of the GATE Environmental Science and Engineering (ES) exam?

The difficulty level of the GATE ES exam varies from easy to moderate.

 

Is there any negative marking in the GATE Environmental Science & Engineering (ES) exam?

Yes. There is the provision of negative marking for the multiple choice questions asked in the GATE ES exam.

 

What are the core subjects covered in the GATE Environmental Science & Engineering (ES) paper?

The core subjects covered in the GATE ES paper are 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.

 

Is it necessary to practice the previous year question papers of GATE Environmental Science & Engineering (ES)?

Yes. Practicing the GATE previous year question papers will make the candidates aware of the type of questions asked frequently in the exam. Candidates can identify their areas of strength and weaknesses and work on them accordingly. Candidates can also evaluate their speed and time management skills.

 

Where can candidates find the GATE previous year question papers for Environmental Science & Engineering (ES)?

The previous year question papers of GATE Environmental Science & Engineering (ES) are available at gate.iitkgp.ac.in/old_question_papers.html.

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