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Environmental Studies Quiz

Free practice quiz on Environmental Studies Quiz with detailed solutions for government exam preparation.

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About This Quiz

Environmental Studies Quiz is a free, 25-minute, 25-mark practice quiz on AajExam rated at medium difficulty, designed to help candidates preparing for SSC, UPSC, Banking, Railway and State PSC government competitive exams sharpen their command of Environmental Studies (Environmental Studies). Every question on this quiz ships with a detailed step-by-step solution so you don't just learn the right answer — you learn the reasoning and shortcuts top scorers use to crack similar questions faster on the actual exam day. Why Environmental Studies Quiz matters in your preparation: government exam-conducting bodies repeatedly draw questions from the same chapters and the same skill-clusters across recruitment cycles. By attempting focused topic-wise quizzes like this one, you build pattern recognition — the ability to spot which formula, rule or trick applies the moment you see a question. Toppers consistently report that 5-10 quizzes on a single topic delivers more exam-day score gain than 20+ unfocused full-length mocks, because targeted drilling exposes your specific sub-topic weaknesses with surgical precision. How to use this quiz effectively: attempt it in one sitting under the 25-minute timer, without referring to notes or external resources — simulate exam-day conditions exactly. After submission, review the auto-generated analytics to see your accuracy, time per question and section-wise performance. Then go through every wrong and skipped question with the explanation, mentally tagging the underlying concept rather than just memorising the answer. Revisit this quiz after 7-10 days; your second attempt should be 15-20% faster with noticeably better accuracy. After mastering this quiz, explore the 6 related quizzes linked below to broaden your topic coverage. AajExam quiz design principles: every quiz on the platform is curated by subject experts using the actual question formats, difficulty distributions and time pressures of the target government exams. We deliberately avoid generic "textbook" questions in favour of exam-replicating ones. Solutions are written in plain English (and Hindi where source material was bilingual), with step-by-step working for quantitative problems, grammar rules for English questions, and direct reference statements for general awareness items. Performance analytics after each attempt include accuracy, attempt rate, time spent per question, and an estimated all-India percentile so you know exactly where you stand against other candidates. This quiz is completely free to attempt. You only need a free AajExam account to track your performance across attempts, view detailed solutions and unlock the platform-wide analytics dashboard. The platform is mobile-friendly and works seamlessly on smartphones, tablets and desktops — so you can sharpen your Environmental Studies (Environmental Studies) skills in any spare 15-minute window.

Environmental Studies Quiz — Questions with Solutions

All 25 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

  1. Q1.Environmental Studies as a school subject primarily integrates content from:

    • A.Science and Social Science
    • B.Only Mathematics
    • C.Only Language
    • D.Only Art
    Show answer

    Answer: A. Science and Social Science

    EVS integrates natural science and social science concepts for young learners.

  2. Q2.Which gas is primarily responsible for the greenhouse effect?

    • A.Oxygen
    • B.Carbon dioxide
    • C.Nitrogen
    • D.Hydrogen
    Show answer

    Answer: B. Carbon dioxide

    Carbon dioxide is a major greenhouse gas contributing to global warming.

  3. Q3.The process of planting trees to restore forests is called:

    • A.Deforestation
    • B.Afforestation
    • C.Urbanization
    • D.Industrialization
    Show answer

    Answer: B. Afforestation

    Afforestation refers to planting trees on previously non-forest land.

  4. Q4.Which of the following is a renewable source of energy?

    • A.Coal
    • B.Solar energy
    • C.Petroleum
    • D.Natural gas
    Show answer

    Answer: B. Solar energy

    Solar energy is renewable as it is continuously replenished by the sun.

  5. Q5.The 3 R's of environmental conservation stand for:

    • A.Reduce, Reuse, Recycle
    • B.Read, Write, Recite
    • C.Run, Rest, Repeat
    • D.Reserve, Restore, Renew
    Show answer

    Answer: A. Reduce, Reuse, Recycle

    The 3 R's promote sustainable resource use: Reduce, Reuse, Recycle.

  6. Q6.Which layer of the atmosphere protects the Earth from harmful UV radiation?

    • A.Ozone layer
    • B.Troposphere
    • C.Ionosphere
    • D.Exosphere
    Show answer

    Answer: A. Ozone layer

    The ozone layer absorbs most of the sun's harmful UV radiation.

  7. Q7.Which of these is a major cause of water pollution?

    • A.Industrial effluents
    • B.Clean rainwater
    • C.Fresh groundwater
    • D.Tree plantation
    Show answer

    Answer: A. Industrial effluents

    Untreated industrial effluents are a major cause of water pollution.

  8. Q8.Biodiversity refers to:

    • A.The variety of life forms in an ecosystem
    • B.A single species of plant
    • C.A type of soil
    • D.A weather pattern
    Show answer

    Answer: A. The variety of life forms in an ecosystem

    Biodiversity is the variety of living organisms within an ecosystem.

  9. Q9.Which of the following practices helps conserve soil?

    • A.Contour ploughing
    • B.Overgrazing
    • C.Deforestation
    • D.Excessive irrigation
    Show answer

    Answer: A. Contour ploughing

    Contour ploughing helps prevent soil erosion on slopes.

  10. Q10.The Chipko Movement in India was primarily aimed at:

    • A.Protecting forests from felling
    • B.Promoting industrialization
    • C.Building more dams
    • D.Increasing mining activity
    Show answer

    Answer: A. Protecting forests from felling

    The Chipko Movement was a grassroots effort to protect trees from being cut down.

  11. Q11.Which of these best defines 'ecosystem'?

    • A.A community of living organisms interacting with their environment
    • B.A single tree
    • C.A type of rock
    • D.A weather station
    Show answer

    Answer: A. A community of living organisms interacting with their environment

    An ecosystem includes living organisms and their physical environment interacting together.

  12. Q12.Global warming is primarily caused by an increase in:

    • A.Greenhouse gases in the atmosphere
    • B.Ozone in the stratosphere
    • C.Oxygen levels
    • D.Water vapor only
    Show answer

    Answer: A. Greenhouse gases in the atmosphere

    Rising greenhouse gas concentrations trap heat, causing global warming.

  13. Q13.Which of these is an example of a non-renewable resource?

    • A.Solar energy
    • B.Wind energy
    • C.Coal
    • D.Water (from rain cycle)
    Show answer

    Answer: C. Coal

    Coal is a fossil fuel that takes millions of years to form, making it non-renewable.

  14. Q14.Composting is a process used to:

    • A.Convert organic waste into manure
    • B.Produce electricity
    • C.Purify drinking water
    • D.Generate plastic
    Show answer

    Answer: A. Convert organic waste into manure

    Composting converts organic waste into nutrient-rich manure.

  15. Q15.Which of these is a key function of wetlands in an ecosystem?

    • A.Water purification and flood control
    • B.Producing petroleum
    • C.Generating electricity directly
    • D.Mining minerals
    Show answer

    Answer: A. Water purification and flood control

    Wetlands filter pollutants and help control flooding.

  16. Q16.Which gas depletes the ozone layer?

    • A.Chlorofluorocarbons (CFCs)
    • B.Oxygen
    • C.Nitrogen
    • D.Water vapor
    Show answer

    Answer: A. Chlorofluorocarbons (CFCs)

    CFCs are known to break down ozone molecules in the stratosphere.

  17. Q17.Which of these is considered an eco-friendly mode of transport?

    • A.Bicycle
    • B.Diesel truck
    • C.Petrol car
    • D.Airplane
    Show answer

    Answer: A. Bicycle

    Bicycles produce no emissions, making them eco-friendly.

  18. Q18.Rainwater harvesting is primarily done to:

    • A.Conserve and reuse water
    • B.Increase pollution
    • C.Cause floods
    • D.Waste water
    Show answer

    Answer: A. Conserve and reuse water

    Rainwater harvesting collects and stores rainwater for later use.

  19. Q19.Which of these human activities contributes most to deforestation?

    • A.Agricultural expansion and logging
    • B.Afforestation drives
    • C.Wildlife conservation
    • D.Rainwater harvesting
    Show answer

    Answer: A. Agricultural expansion and logging

    Clearing land for agriculture and logging are major drivers of deforestation.

  20. Q20.The term 'endangered species' refers to a species that is:

    • A.At risk of extinction
    • B.Extremely common
    • C.Newly discovered
    • D.Not affected by humans
    Show answer

    Answer: A. At risk of extinction

    Endangered species face a high risk of becoming extinct.

  21. Q21.Which of these best describes 'sustainable development'?

    • A.Meeting present needs without compromising future generations' ability to meet theirs
    • B.Using all resources immediately
    • C.Ignoring environmental impact for growth
    • D.Focusing only on economic growth
    Show answer

    Answer: A. Meeting present needs without compromising future generations' ability to meet theirs

    Sustainable development balances current needs with future resource availability.

  22. Q22.Which of the following is a natural disaster linked to environmental imbalance?

    • A.Floods
    • B.Elections
    • C.Festivals
    • D.Sports events
    Show answer

    Answer: A. Floods

    Floods can result from environmental factors like deforestation and heavy rainfall.

  23. Q23.Which of these best conserves biodiversity?

    • A.Establishing protected wildlife sanctuaries
    • B.Increasing hunting
    • C.Expanding urban sprawl unchecked
    • D.Draining wetlands
    Show answer

    Answer: A. Establishing protected wildlife sanctuaries

    Protected sanctuaries help preserve habitats and species diversity.

  24. Q24.Vermicomposting uses which organism to break down organic waste?

    • A.Earthworms
    • B.Birds
    • C.Fish
    • D.Insects only
    Show answer

    Answer: A. Earthworms

    Vermicomposting uses earthworms to decompose organic matter into compost.

  25. Q25.Which international agreement aims to reduce greenhouse gas emissions globally?

    • A.Paris Agreement
    • B.Geneva Convention
    • C.Kyoto Protocol (also valid, but Paris is more current)
    • D.Both Kyoto Protocol and Paris Agreement
    Show answer

    Answer: D. Both Kyoto Protocol and Paris Agreement

    Both the Kyoto Protocol and the Paris Agreement are major international climate accords.

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Frequently Asked Questions

Is Environmental Studies Quiz free to attempt on AajExam?

Yes. Environmental Studies Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.

How long does it take to complete Environmental Studies Quiz?

Environmental Studies Quiz runs on a 25-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.

Are detailed solutions provided?

Yes. Every question on Environmental Studies Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.

Can I attempt Environmental Studies Quiz multiple times?

Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.

Which government exams does this quiz prepare me for?

Environmental Studies questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.

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