CLAT GurukulSamudraManthan

Topic 235 · Answers

Flash floods: causes beyond extreme rain

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

  1. Question 1Answer D

    Which institute's study on flash-flood drivers resurfaced during the July 2026 monsoon floods?

    • IIT Roorkee
    • IIT Bombay
    • IISc Bengaluru
    • Correct answer: IIT Gandhinagar

    Core Trigger: An IIT Gandhinagar study (npj Natural Hazards, 15 July 2025) resurfaced during the July 2026 monsoon floods.From Book 1 RATNA, topic 235, point 1

  2. Question 2Answer B

    Which title does the IIT Gandhinagar flash-flood study carry?

    • Soil moisture and monsoon flood risk in peninsular India
    • Correct answer: Drivers of flash floods in the Indian sub-continental river basins
    • Causes of cloudbursts in the Himalayan river catchments
    • Rainfall extremes and urban flooding in South Asia

    Study Title: 'Drivers of flash floods in the Indian sub-continental river basins' by Nandana Dilip K, Urmin Vegad and Vimal Mishra.From Book 1 RATNA, topic 235, point 2

  3. Question 3Answer B

    Which IIT Gandhinagar professor is a co-author of the study?

    • Krishna AchutaRao
    • Correct answer: Vimal Mishra
    • Subimal Ghosh
    • Raghu Murtugudde

    Current Head: Vimal Mishra, Professor at IIT Gandhinagar, is a co-author.From Book 1 RATNA, topic 235, point 3

  4. Question 4Answer D

    A cloudburst is rain of at least how much in one hour over about 20 to 30 sq km?

    • 50 mm
    • 150 mm
    • 75 mm
    • Correct answer: 100 mm

    Key Term: A cloudburst is rain of 100 mm or more in one hour over about 20–30 sq km.From Book 1 RATNA, topic 235, point 4

  5. Question 5Answer A

    Which of the following is/are correct? 1. About three-quarters of flash floods need extreme rain on saturated soil. 2. Rain alone drives about half of flash floods.

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

    Data / Report: About three-quarters of flash floods need extreme rain on saturated soil; rain alone drives a quarter.From Book 1 RATNA, topic 235, point 5

  6. Question 6Answer D

    Which body, under the Ministry of Earth Sciences, defines cloudbursts in India?

    • NDMA
    • Central Water Commission
    • ISRO
    • Correct answer: IMD

    Stakeholders: IMD, under the Ministry of Earth Sciences, defines cloudbursts; NDMA is the apex disaster body.From Book 1 RATNA, topic 235, point 6

  7. Question 7Answer B

    NDMA is chaired ex officio by the Prime Minister under which section of the Disaster Management Act?

    • Section 44
    • Correct answer: Section 3
    • Section 8
    • Section 10

    Apex Body: NDMA is chaired ex officio by the Prime Minister under section 3 of the Disaster Management Act.From Book 1 RATNA, topic 235, point 8

  8. Question 8Answer D

    The Disaster Management Act, 2005 (Act 53 of 2005) is dated which day?

    • 23 December 2004
    • 9 April 2005
    • 26 December 2005
    • Correct answer: 23 December 2005

    Founded: The Disaster Management Act, 2005 (Act 53 of 2005) dates from 23 December 2005; section 44 constitutes the NDRF.From Book 1 RATNA, topic 235, point 9

  9. Question 9Answer B

    The Sendai Framework 2015 to 2030 has how many global targets?

    • Five
    • Correct answer: Seven
    • Ten
    • Four

    Landmark: The Sendai Framework 2015–2030 has seven global targets and succeeded the Hyogo Framework 2005–2015.From Book 1 RATNA, topic 235, point 10

  10. Question 10Answer C

    Which of the following is/are correct? 1. Air holds about 7% more moisture per 1 degree C warming. 2. IMD calls 204.5 mm in 24 hours 'extremely heavy'.

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

    Definition: Clausius–Clapeyron: air holds about 7% more moisture per 1 °C warming; IMD calls 204.5 mm in 24 hours 'extremely heavy'.From Book 1 RATNA, topic 235, point 12

Open these answers in the app (sign-in needed)