Fri. Jan 10th, 2025

Global Warming and Change in Atmospheric Chemistry

  1. Which regions have shown early melting of winter snow as a result of global warming?

    Options:
    1. Antarctica and Greenland
    2. Africa and Asia
    3. Great Britain, Norway, Canada, and the USA
    4. South America and Australia

    Option: C

  2. By how many days has the spring season begun earlier due to the early melting of winter snow in certain regions?

    Options:
    1. At least 15 days
    2. At least 30 days
    3. At least 45 days
    4. At least 60 days

    Option: A

  3. What does the flowering of mango trees in Uttar Pradesh, India in December 2004 indicate?

    Options:
    1. Global warming trend
    2. Global cooling trend
    3. Stable temperature trend
    4. No conclusive evidence

    Option: A

  4. What denotes warming of the earth’s surface and its atmosphere between 1970 and 2000 ?

    Options:
    1. Decrease in El Nino events
    2. Increase in El Nino events
    3. Stable El Nino events
    4. Increase in La Nina events

    Option: B

  5. Why do some scientists argue that temperature data are deceptive and confusing?

    Options:
    1. Because most of the temperatures have been recorded in rural areas
    2. Because most of the temperatures have been recorded in ocean surfaces
    3. Because most of the temperatures have been recorded in urban areas which become locally warmer than the surrounding countryside because of urban pollution
    4. Becausee most of the temperatures have been recorded in mountainous areas

    Option: C

  6. What is the projected CO2 concentration for the year 2100 according to the IPCC?

    Options:
    1. 405-460ppmv
    2. 445-640ppmv
    3. 540-970ppmv
    4. 640-1000ppmv

    Option: C

  7. What is the projected global mean temperature change from the year 1990 for the CO2 concentration range of 445-640ppmv?

    Options:
    1. 0.4-1.1°C
    2. 0.8-2.6°C
    3. 1.4-5.8°C
    4. 5-32°C

    Option: B

  8. What is the projected global mean sea level rise from the year 1990 for the CO2 concentration range of 445-640ppmv?

    Options:
    1. 3-14 cm
    2. 5-32 cm
    3. 9-88 cm
    4. 14-120 cm

    Option: B

  9. Which of the following statements is true about Andean glaciers in Peru?

    Options:
    1. They have increased in length and volume in the past century.
    2. Their rate of upward retreat has decreased in the last three decades.
    3. Their rate of upward retreat has increased seven times in the last three decades.
    4. They have not been affected by melting.

    Option: C

  10. What is the percentage of ice volume lost by the glaciers of Chinese Tien Shan Mountains since 1960?

    Options:
    1. 50%
    2. 25%
    3. 100%
    4. 75%

    Option: B

  11. What did the study of 19 glaciers of the Baspa basin of Himachal Pradesh reveal?

    Options:
    1. Their mass balance has increased in recent years.
    2. They have disappeared completely.
    3. Their mass balance has registered a negative tren
    4. They have increased in size.

    Option: C

  12. The estimated year when the glaciers in the Baspa basin of Himachal Pradesh would disappear if the current rate of retreat continues is

    Options:
    1. 2020
    2. 2030
    3. 2040
    4. 2050

    Option: C

  13. The latest finding of the SAC studies on the continuous melting and retreat of glaciers in Himachal Pradesh is

    Options:
    1. It will not affect water supply in the future.
    2. It will result in marked reduction in runoff causing serious shortage of water supply in future.
    3. It will increase the water supply in the future.
    4. It will not have any impact on the environment.

    Option: B

  14. What is the rate of lowering of the height of Mt. Everest from 1992 to 1999?

    Options:
    1. O.01m per year
    2. O.1m per year
    3. O.5m per year
    4. 1m per year

    Option: B

  15. Which of the following diseases is not indicative of global warming?

    Options:
    1. Malaria
    2. Cholera
    3. Plague
    4. Smallpox

    Option: D

  16. Why do insects, bacteria, and viruses of tropical and subtropical diseases flourish in extreme weather conditions?

    Options:
    1. They cannot survive in moderate weather conditions.
    2. They prefer wet weather conditions.
    3. They prefer dry weather conditions.
    4. They can adapt to extreme weather conditions.

    Option: D

  17. What caused the rise in sea level by 10-25 centimeters in the later half of the 20th century?

    Options:
    1. Increase in carbon dioxide emissions
    2. Increase in sea temperature by 0.6°C
    3. Thawing of permafrost areas
    4. Ozone depletion

    Option: B

  18. If the current rate of increase of sea temperature continues until the end of the present century, what is the estimated increase in sea level by 2100?

    Options:
    1. 10-25 centimeters
    2. 1 meter
    3. 5 meters
    4. 10 meters

    Option: B

  19. What is the process of global warming that is caused by the increase in emission of carbon dioxide and methane?

    Options:
    1. Ozone depletion
    2. Greenhouse effect
    3. Destruction of ozone layer
    4. Maintenance of ozone layer

    Option: B

  20. What is the significance of the stratospheric ozone layer?

    Options:
    1. It prevents ultraviolet solar radiation from reaching the earth’s surface
    2. It causes the temperature of the earth’s surface to rise
    3. It is the source of ozone gas
    4. It protects plants from solar radiation

    Option: A