Fri. Jan 10th, 2025

Global Warming and Change in Atmospheric Chemistry

  1. What was the fear of oil producing countries regarding the IPCC report of 1996?

    Options:
    1. Fear of a reduction in oil production
    2. Fear of tax on fossil fuel
    3. Fear of adverse economic conditions
    4. All of the above

    Option: D

  2. What is the stance of industrialized countries on the imposition of carbon tax on fossil fuels?

    Options:
    1. They are in favor of it
    2. They are against it
    3. They are willing to share the burden
    4. They are not willing to share the burden

    Option: A

  3. Why could industrialized nations not implement the agreement for reducing and bringing back their CO2 emissions to 1990 level by 2000 AD?

    Options:
    1. Lack of technological advancements
    2. Lack of political will
    3. Lack of funding
    4. All of the above

    Option: B

  4. What is the recommended level of CO2 emission by IPCC to keep the rise in temperature at a global level up to 2°C by the end of the 21st century?

    Options:
    1. 450 ppmv
    2. 550 ppmv
    3. 650 ppmv
    4. 750 ppmv

    Option: A

  5. Which greenhouse gas has registered a phenomenal increase in concentration in the atmosphere from the preindustrial level to 1992 level?

    Options:
    1. Carbon dioxide
    2. Methane
    3. Nitrous oxide
    4. Tropospheric ozone

    Option: B

  6. What was the maximum depletion in stratospheric ozone?

    Options:
    1. 5% in tropical areas
    2. 10% in mid-latitude areas of the northern hemisphere
    3. 99% over Antarctica
    4. No depletion was observed

    Option: C

  7. What has been ascribed as the cause for the phenomenal decrease in stratospheric ozone over Antarctica in 1992-93?

    Options:
    1. Emission of carbon dioxide
    2. Emission of methane
    3. Emission of nitrous oxide
    4. Emission of sulphate aerosol from Pinatubo volcanic eruption in 1991

    Option: D

  8. Which country accounted for 23% of the total world carbon dioxide emission in the year 1995?

    Options:
    1. China
    2. India
    3. United States
    4. Germany

    Option: C

  9. Which country is one of the five worst carbon dioxide emitter countries?

    Options:
    1. Russia
    2. Brazil
    3. Japan
    4. Indonesia

    Option: B

  10. According to the World Watch Institute, what was the percentage decrease in global carbon emission in 1998?

    Options:
    1. 3.7%
    2. 0.5%
    3. 24%
    4. 6.32%

    Option: B

  11. What are the major sources of methane?

    Options:
    1. Fossil fuels
    2. Oceanic emissions
    3. Biomass degradation and paddy fields
    4. Solar radiation

    Option: C

  12. Which countries are responsible for producing the largest amount of global warming methane, according to the IPCC report of 1992?

    Options:
    1. Industrialized countries
    2. Developing countries
    3. Both industrialized and developing countries
    4. None of the above

    Option: B

  13. What is the upper limit of methane production from world paddy fields, according to Suresh K. Sinha’s experimental studies?

    Options:
    1. 37 million tonnes per year
    2. 13 million tonnes per year
    3. 60 million tonnes per year
    4. 7.08 million tonnes per year

    Option: B

  14. What is the effect of increased concentration of carbon dioxide in the atmosphere?

    Options:
    1. Prevents solar radiation from reaching the earth
    2. Causes cooling of the earth’s surface
    3. Changes thermal conditions and global radiation and heat balance
    4. Increases the earth’s atmospheric pressure

    Option: C

  15. Why does an increase in carbon dioxide enhance the absorption of radiation of more heat emitted from the earth’s surface?

    Options:
    1. Carbon dioxide is transparent to incoming shortwave solar radiation.
    2. Carbon dioxide absorbs most of the outgoing longwave radiation emitted from the earth’s surface.
    3. Carbon dioxide reflects incoming shortwave solar radiation.
    4. Carbon dioxide absorbs incoming shortwave solar radiation.

    Option: B

  16. What is the result of the mechanism of the absorption of more heat emitted from the earth’s surface by atmospheric carbon dioxide?

    Options:
    1. Cooling of the lower atmosphere.
    2. Warming of the upper atmosphere.
    3. Warming of the lower atmosphere.
    4. No effect on the temperature of the atmosphere.

    Option: C

  17. What is the term used to describe the process by which the warmed lower atmosphere re-radiates heat to the earth’s surface?

    Options:
    1. Convection
    2. Conduction
    3. Counter radiation
    4. Absorption

    Option: C

  18. What is the relationship between an increase in atmospheric carbon dioxide and the increase of surface temperature?

    Options:
    1. They are directly proportional.
    2. They are inversely proportional.
    3. There is no relationship.
    4. They are independent of each other.

    Option: A

  19. Why are the results and predictions of different models regarding the relationship between an increase in atmospheric carbon dioxide and the increase of surface temperature confusing and contradictory?

    Options:
    1. The models are based on insufficient dat
    2. The models are not accurate.
    3. The models are based on different assumptions.
    4. The models do not take into account feedback mechanisms.

    Option: C

  20. What is the conclusion drawn by S.H. Schneider regarding the temperature rise resulting from the increased content of atmospheric carbon dioxide?

    Options:
    1. The temperature could rise up to 1.5° to 3°C if the concentration of atmospheric carbon dioxide could be doubled from the 300 p.p.m. level to 600 p.p.m.
    2. The temperature would remain constant regardless of the concentration of atmospheric carbon dioxide.
    3. The temperature would decrease with an increase in the concentration of atmospheric carbon dioxide.
    4. The temperature would increase up to 10°C with an increase in the concentration of atmospheric carbon dioxide.

    Option: A