Skip to content
GK24
GK QuizEnvironment & Ecology

Environment & Ecology Mixed Quiz: Set 61

  • 20 questions
  • 20 minutes
  • Difficulty: Medium
Start Quiz

About this quiz

Set 61 of the Environment & Ecology mixed quiz has 20 multiple-choice questions from 14 different topics of the subject: Ecosystem and Food Chains, Sacred Groves and Community Conservation in India, National Parks and Wildlife Sanctuaries and more. 10 of them were asked in real previous-year papers. A topic quiz checks one chapter; this set revises the whole subject at once, the way an exam paper does, where the next question can come from any chapter. Every question carries an explanation of why the correct option is right and why the others are wrong. Keep to the timer, read the explanations at the end, and go back to the notes of any topic where you slipped.

Questions in this quiz

20 questions with answers and explanations

Q2.Environment & EcologyHard

Which amendment introduced conservation reserves and community reserves as categories of protected area in India?

  1. A.The Wild Life (Protection) Amendment Act, 1991
  2. B.The Forest (Conservation) Act, 1980
  3. C.The Wild Life (Protection) Amendment Act, 2002
  4. D.The Environment (Protection) Act, 1986
Show answer
Correct answer: C. The Wild Life (Protection) Amendment Act, 2002

Until then the Act of 1972 knew only national parks and sanctuaries, both of which need state ownership and control.

Q3.Environment & EcologyAsked in: CDS · CDS-II 2026, GKEasy

UNESCO World Heritage site Nanda Devi National Park is located in which one of the following States ?

  1. A.Arunachal Pradesh
  2. B.Uttarakhand
  3. C.Himachal Pradesh
  4. D.Sikkim
Show answer
Correct answer: B. Uttarakhand

Nanda Devi National Park lies in the Chamoli district of Uttarakhand, around India's second-highest peak, Nanda Devi. The park is a vast glacial basin ringed by high peaks and was inscribed on the UNESCO World Heritage list in 1988 for its wild, untouched landscape.

Q4.Environment & EcologyMedium

Under the Perform, Achieve and Trade scheme, a unit that exceeds its energy saving target is issued

  1. A.Renewable Energy Certificates
  2. B.Energy Saving Certificates
  3. C.Carbon Emission Reduction units
  4. D.Green Bonds
Show answer
Correct answer: B. Energy Saving Certificates

PAT gives each designated consumer a target to reduce its specific energy consumption over a cycle; a plant that overshoots the target earns ESCerts and may sell them on the power exchanges to a plant that has fallen short, which turns efficiency into a tradable commodity.

Q5.Environment & EcologyAsked in: CDS · CDS-I 2024, GKMedium

Which one of the following is related to global dimming?

  1. A.Fall of atmospheric pressure due to increased particulates
  2. B.Rise of atmospheric pressure due to increased particulates
  3. C.Rise of temperature due to increased particulates
  4. D.Fall of temperature due to increased particulates
Show answer
Correct answer: D. Fall of temperature due to increased particulates

Global dimming is the drop in sunlight reaching the ground, and the cooling that follows, caused by particles in the air.

Q7.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2017, GS Paper IEasy

Biological Oxygen Demand (BOD) is a standard criterion for

  1. A.Measuring oxygen levels in blood
  2. B.Computing oxygen levels in forest ecosystems
  3. C.Pollution assay in aquatic ecosystems
  4. D.Assessing oxygen levels in high altitude regions
Show answer
Correct answer: C. Pollution assay in aquatic ecosystems

BOD tells how much organic pollution a body of water carries. Biological, or biochemical, Oxygen Demand is the amount of dissolved oxygen that aerobic micro-organisms use up while breaking down the organic matter in a water sample, usually measured over five days at 20 degrees Celsius and expressed in milligrams…

Q8.Environment & EcologyMedium

After the Wild Life (Protection) Amendment Act, 2022, how many schedules does the Act contain?

  1. A.Three
  2. B.Four
  3. C.Five
  4. D.Six
Show answer
Correct answer: B. Four

The amendment of 2022 rationalised the schedules of the parent Act: Schedule I now lists animals given the highest protection, Schedule II lists animals with a lesser degree of protection, Schedule III lists specified plants and Schedule IV lists specimens figuring in the appendices of the Convention on International Trade…

Q9.Environment & EcologyAsked in: CDS · CDS-II 2020, GKMedium

Which one of the following statements with regard to ozone is not correct?

  1. A.Ozone is found mostly at 15-55 km in the atmosphere.
  2. B.Ozone is produced by gaseous chemical reactions.
  3. C.16th November is celebrated as the International Day for the Preservation of the Ozone Layer.
  4. D.Ozone is a form of oxygen in which three oxygen atoms are bounded together.
Show answer
Correct answer: C. 16th November is celebrated as the International Day for the Preservation of the Ozone Layer.

The International Day for the Preservation of the Ozone Layer is observed on 16 September, not 16 November. The date marks the signing of the Montreal Protocol on 16 September 1987, the treaty that phased out chlorofluorocarbons and other ozone-depleting substances.

Q11.Environment & EcologyAsked in: UPSC CAPF · CAPF 2026, Paper IMedium

Which one of the following factors is responsible for the spread of myxomatosis, a severe viral disease among rabbits?

  1. A.Higher water temperature
  2. B.Higher soil temperature
  3. C.High population density of rabbits
  4. D.Low population density of rabbits
Show answer
Correct answer: C. High population density of rabbits

Myxomatosis passes from rabbit to rabbit through biting insects and contact, so it spreads fastest where rabbits are crowded together.

Q12.Environment & EcologyMedium

Which of the following is the only marine turtle sanctuary of India, famous as the nesting ground of the olive ridley turtle?

  1. A.Gahirmatha Marine Sanctuary
  2. B.Gulf of Mannar Marine National Park
  3. C.Malvan Marine Sanctuary
  4. D.Rani Jhansi Marine National Park
Show answer
Correct answer: A. Gahirmatha Marine Sanctuary

Gahirmatha, on the Odisha coast beside the Bhitarkanika mangroves, is the only turtle sanctuary notified in India and protects the world's largest mass nesting ground of the olive ridley turtle, where the phenomenon of arribada, or mass nesting, takes place.

Q13.Environment & EcologyMedium

Biodiversity Management Committees and Biodiversity Heritage Sites are provided for by which law?

  1. A.The Biological Diversity Act, 2002
  2. B.The Wild Life (Protection) Act, 1972
  3. C.The Forest Rights Act, 2006
  4. D.The National Green Tribunal Act, 2010
Show answer
Correct answer: A. The Biological Diversity Act, 2002

It builds a three tier system: the National Biodiversity Authority at the centre, State Biodiversity Boards, and a Biodiversity Management Committee in every local body, which keeps a People Biodiversity Register of the plants, animals and traditional uses of its area.

Q14.Environment & EcologyEasy

The Environmental Impact Assessment Notification currently in force in India was issued in which year?

  1. A.1986
  2. B.1994
  3. C.2006
  4. D.2010
Show answer
Correct answer: C. 2006

The EIA Notification of 2006 replaced the earlier notification of 1994 and reorganised the whole clearance process, chiefly by dividing projects into Category A, appraised and cleared at the central level, and Category B, appraised and cleared at the state level, and by laying down the four stages of screening…

Q17.Environment & EcologyAsked in: CDS · CDS-II 2023, GKEasy

Energy and nutrients flow from one trophic level to another in an ecosystem. Which one of the following statements correctly describes the direction of flow of energy and nutrients in an ecosystem ?

  1. A.Energy flow is cyclic and nutrient flow is unidirectional.
  2. B.Energy flow is unidirectional and nutrient flow is cyclic.
  3. C.Both energy and nutrient flow are unidirectional.
  4. D.Both energy and nutrient flow are cyclic.
Show answer
Correct answer: B. Energy flow is unidirectional and nutrient flow is cyclic.

Energy passes one way from the Sun through the food chain and is lost as heat, while nutrients are used again and again.

Q18.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2025, GS Paper IEasy

Artificial way of causing rainfall to reduce air pollution makes use of

  1. A.silver iodide and potassium iodide
  2. B.silver nitrate and potassium iodide
  3. C.silver iodide and potassium nitrate
  4. D.silver nitrate and potassium chloride
Show answer
Correct answer: A. silver iodide and potassium iodide

These salts are the usual seeding agents in cloud seeding, the artificial way to make rain. Cloud seeding sprays tiny particles into clouds that already hold moisture, from aircraft, rockets or ground generators.

Q19.Environment & EcologyHard

The first Biodiversity Heritage Site declared in India was:

  1. A.Mawphlang sacred forest, Meghalaya
  2. B.Nallur tamarind grove, Karnataka
  3. C.Majuli, Assam
  4. D.Chilika, Odisha
Show answer
Correct answer: B. Nallur tamarind grove, Karnataka

Nallur, near Devanahalli on the outskirts of Bengaluru, is an old stand of tamarind trees, some of them several centuries old, and Karnataka declared it the first Biodiversity Heritage Site of the country under section 37 of the Biological Diversity Act.

View all quizzes