Fri. Jan 10th, 2025

Atmospheric Extreme Events and Hazards

  1. What caused the increase in outflow of water from Maithan and Panchet dams in September 1978?

    Options:
    1. The construction of reservoirs
    2. The torrential rainfall from a cyclonic storm
    3. The increase in demand for water
    4. The decrease in water levels in the reservoirs

    Option: B

  2. What was the outflow of water from Maithan and Panchet dams on September 23, 1978?

    Options:
    1. 16,000 cusecs
    2. 10,000 cusecs
    3. 100,000 cusecs
    4. 160,000 cusecs

    Option: A

  3. What was the maximum discharge of water recorded in the Damodar river on September 27, 1978?

    Options:
    1. 379,800 cusecs
    2. 160,000 cusecs
    3. 161,900 cusecs
    4. 60,000 cusecs

    Option: A

  4. What caused the flash floods in Jaipur city in 1981?

    Options:
    1. Large-scale deforestation
    2. Highly sinuous and meandering courses of the rivers
    3. Heavy rainfall in arid and semi-arid areas
    4. None of the above

    Option: C

  5. What is the most important anthropogenic factor in causing river floods?

    Options:
    1. Highly sinuous and meandering courses of the rivers
    2. Large-scale deforestation
    3. Poor natural drainage systems
    4. None of the above

    Option: B

  6. What causes the increase in sediment load in rivers?

    Options:
    1. Decreased surface runoff
    2. Increased infiltration
    3. Decreased soil erosion
    4. Increased surface runoff

    Option: D

  7. How does deforestation in the Himalayas affect the frequency and magnitude of floods?

    Options:
    1. It reduces the frequency and magnitude of floods
    2. It has no effect on the frequency and magnitude of floods
    3. It increases the frequency and magnitude of floods
    4. It causes flash floods instead of river floods

    Option: C

  8. What is the impact of urbanization on floods?

    Options:
    1. It reduces the dimension and magnitude of floods
    2. It has no impact on floods
    3. It increases the dimension and magnitude of floods
    4. It causes flash floods instead of river floods

    Option: C

  9. What is the impact of ploughing down valley side slopes of alluvial rivers in India?

    Options:
    1. It reduces the gradient of river banks
    2. It increases the water accommodating capacity of the river valley
    3. It has no impact on floods
    4. It reduces the water accommodating capacity of the river valley

    Option: D

  10. What is the impact of blocking the natural flow of rivers on flood hazards?

    Options:
    1. It reduces the frequency and magnitude of floods
    2. It has no impact on floods
    3. It increases the frequency and magnitude of floods
    4. It causes flash floods instead of river floods

    Option: C

  11. Which river is considered the most notorious in the USA for causing flood havocs?

    Options:
    1. Colorado river
    2. Ohio river
    3. Mississippi river
    4. Tennessee river

    Option: C

  12. What is the percentage of the total geographical area of the conterminus USA covered by the drainage basin of the Mississippi river?

    Options:
    1. 20%
    2. 30%
    3. 40%
    4. 50%

    Option: C

  13. Which atmospheric disturbance caused severe floods in the southeastern and eastern states of the USA in June 1972?

    Options:
    1. Hurricane Agnes
    2. Tornadoes
    3. Earthquake
    4. Cyclone

    Option: A

  14. Which river in India is prone to floods mainly in the Ganga plains?

    Options:
    1. Brahmaputra river
    2. Godavari river
    3. Ganges river
    4. Yamuna river

    Option: C

  15. What is the cause of the increase in floods in India every year?

    Options:
    1. Rapid rate of reforestation
    2. Decrease in sediment load of rivers
    3. Reduction in the water accommodating capacity of the river valleys
    4. Decreasing urbanization

    Option: C

  16. Which states in India account for 62% of the damages caused by floods?

    Options:
    1. Uttar Pradesh, Bihar, and Andhra Pradesh
    2. Rajasthan, Uttar Pradesh, and Tamil Nadu
    3. West Bengal, Assam, and Gujarat
    4. Punjab, Orissa, and Madhya Pradesh

    Option: A

  17. What is the total area subject to flooding in India in 1981?

    Options:
    1. 20 million ha
    2. 40 million ha
    3. 60 million ha
    4. 80 million ha

    Option: B

  18. How has the average loss from floods changed over the years in India?

    Options:
    1. It remained constant
    2. It decreased
    3. It got doubled in 1966-67
    4. It went up to 10 times in 1976-78

    Option: C

  19. What is the total direct loss caused by floods in India during the 20-year period of 1953-75?

    Options:
    1. Rs. 2104 million
    2. Rs. 8,850 million
    3. Rs. 10,954 million
    4. Rs. 13,758 million

    Option: B

  20. Which of the following is not a flood control measure?

    Options:
    1. Afforestation
    2. Diverting the flow of water
    3. Reducing the volume of water
    4. Encouraging soil erosion

    Option: D