CLAT GurukulSamudraManthan

Topic 285 · Answers

Shrinking Caspian Sea and the Tehran Convention

All 10 answers, each with its Book 1 RATNA fact. Try the questions first

  1. Question 1Answer B

    A June 2026 study found the Caspian lost about what share of surface area since the mid-1990s?

    • About 0.5%
    • Correct answer: About 5.5%
    • About 25%
    • About 15%

    Core Trigger: An Earth's Future study published on 5 June 2026 found the Caspian lost about 5.5% of its surface area since the mid-1990s.From Book 1 RATNA, topic 285, point 1

  2. Question 2Answer A

    By about how much did Caspian water levels fall?

    • Correct answer: About two metres
    • About 20 cm
    • About 20 metres
    • About 10 metres

    Key Findings: The loss is roughly 24,000 sq km and 630 cubic km of water; levels fell about two metres.From Book 1 RATNA, topic 285, point 2

  3. Question 3Answer A

    Nima Shokri co-authored the Caspian study with whom?

    • Correct answer: Amir AghaKouchak
    • Rafael Grossi
    • Mahir Aliyev
    • Peter Gleick

    Key People: Nima Shokri and Amir AghaKouchak co-authored the study; Mahir Aliyev coordinated the Tehran Convention in August 2026.From Book 1 RATNA, topic 285, point 3

  4. Question 4Answer C

    Since which year has the Caspian seal been IUCN-listed Endangered?

    • 2015
    • 2000
    • Correct answer: 2008
    • 1996

    Key Species: The Caspian seal, found only in this sea, has been IUCN-listed Endangered since 2008.From Book 1 RATNA, topic 285, point 4

  5. Question 5Answer C

    Which is/are correct? 1. Evaporation explains only about 40% of the loss. 2. The Volga supplies roughly 80% of inflow.

    • Only 1
    • Only 2
    • Correct answer: Both 1 and 2
    • Neither

    Data: Evaporation explains only about 40% of the loss; the Volga supplies roughly 80% of inflow.From Book 1 RATNA, topic 285, point 5

  6. Question 6Answer D

    In which year did India, Iran and Russia establish the INSTC?

    • 2014
    • 2005
    • 1991
    • Correct answer: 2000

    India Link: India, Iran and Russia established the International North-South Transport Corridor on 12 September 2000.From Book 1 RATNA, topic 285, point 7

  7. Question 7Answer B

    Which part of the Caspian is drying fastest?

    • Western coastal strip
    • Correct answer: Shallow northern part
    • Central basin
    • Deep southern part

    Geography: The Caspian is Earth's largest enclosed body of water; its shallow northern part is drying fastest.From Book 1 RATNA, topic 285, point 8

  8. Question 8Answer A

    The Tehran Convention entered into force in which year?

    • Correct answer: 2006
    • 2011
    • 2003
    • 2018

    Founded: The Tehran Convention was adopted in 2003 and entered into force in 2006; Caspian Sea Day is 12 August.From Book 1 RATNA, topic 285, point 9

  9. Question 9Answer B

    The 2018 Aktau Convention addresses which issue?

    • Oil pollution response
    • Correct answer: Legal status of the Caspian
    • Volga water sharing
    • Caspian seal protection

    Landmark: The Aktau Convention (2018) addresses the Caspian's legal status; the Aktau Protocol on oil pollution dates from 2011.From Book 1 RATNA, topic 285, point 10

  10. Question 10Answer B

    Which is/are correct? 1. An endorheic basin has an ocean outlet. 2. The Tehran Convention is the first legally binding regional agreement of all five littoral states.

    • Only 1
    • Correct answer: Only 2
    • Both 1 and 2
    • Neither

    Statute: The Tehran Convention is the first legally binding regional agreement of all five littoral states.From Book 1 RATNA, topic 285, point 11

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