Thu. Feb 20th, 2025

Global Warming and Change in Atmospheric Chemistry

  1. What is the most significant greenhouse gas?

    Options:
    1. Oxygen
    2. Carbon Dioxide
    3. Methane
    4. Nitrogen

    Option: B

  2. Which sector is responsible for releasing huge amounts of carbon dioxide into the atmosphere?

    Options:
    1. Agriculture
    2. Transportation
    3. Tourism
    4. Education

    Option: B

  3. What is the fourth major source of the production of carbon dioxide?

    Options:
    1. Electric power stations
    2. Factories
    3. Transportation
    4. Deforestation and burning of firewoods

    Option: D

  4. What is the role of forests in storing carbon?

    Options:
    1. They release carbon dioxide into the atmosphere
    2. They fix huge quantities of carbon dioxide among the plants
    3. They have no role in the carbon cycle
    4. They release methane into the atmosphere

    Option: B

  5. What happens when the forest cover is reduced through large-scale deforestation?

    Options:
    1. The consumption of extra amount of carbon decreases
    2. The consumption of extra amount of carbon increases
    3. The consumption of extra amount of oxygen decreases
    4. The consumption of extra amount of oxygen increases

    Option: B

  6. What are the anthropogenic sources of carbon dioxide emissions?

    Options:
    1. Factories and transport vehicles
    2. Volcanoes and thermal power stations
    3. Deforestation
    4. All of the above

    Option: D

  7. How much carbon was added to the atmosphere due to deforestation?

    Options:
    1. 90-100 billion tonnes
    2. 100-120 billion tonnes
    3. 120-150 billion tonnes
    4. 150-180 billion tonnes

    Option: D

  8. What are some minor greenhouse gases released to the atmosphere during the operation and maintenance of appliances and equipment?

    Options:
    1. Methane and nitrous oxides
    2. Chlorofluorocarbons and halons
    3. Ozone
    4. E.All of the above

    Option: B

  9. What is the pre-industrial level of atmospheric carbon dioxide concentration?

    Options:
    1. 250-260 p.p.m.
    2. 270-280 p.p.m.
    3. 280-290 p.p.m.
    4. 290-300 p.p.m.

    Option: C

  10. By how much has the atmospheric content of carbon dioxide increased from the pre-industrial level to 1988?

    Options:
    1. 10-15%
    2. 20-25%
    3. 30-35%
    4. 40-45%

    Option: B

  11. What is the percentage increase in atmospheric carbon dioxide from the pre-industrial level to 1988?

    Options:
    1. 10%
    2. 15%
    3. 20%
    4. 25%

    Option: D

  12. What is the rate of increase of atmospheric carbon dioxide through anthropogenic sources?

    Options:
    1. Slowing down due to decreased industrialization
    2. Accelerating due to developing countries’ industrialization and urbanization
    3. Staying the same as before
    4. None of the above

    Option: B

  13. Which countries dominated the total emissions of carbon dioxide through the burning of fossil fuels by 1950?

    Options:
    1. Developing countries
    2. Highly industrialized countries
    3. Both developing and highly industrialized countries contributed equally
    4. None of the above

    Option: B

  14. Which country contributed about 42% of the total world emissions of carbon dioxide in the year 1950?

    Options:
    1. India
    2. The United States
    3. The United Kingdom
    4. Germany

    Option: B

  15. Where did India stand in the hierarchy of carbon dioxide-emitting countries up to 1950?

    Options:
    1. First
    2. Second
    3. Thirteenth
    4. Last

    Option: C

  16. Which of the following is true about carbon dioxide emissions on a per capita basis?

    Options:
    1. Developing nations emit more carbon dioxide per capita than developed nations.
    2. Developed nations emit more carbon dioxide per capita than developing nations.
    3. All nations emit an equal amount of carbon dioxide per capit
    4. Carbon dioxide emissions are not related to per capita measurements.

    Option: B

  17. Which nation has the highest per capita emission of carbon dioxide?

    Options:
    1. China
    2. India
    3. Russia
    4. USA

    Option: D

  18. What is the main task of the IPCC?

    Options:
    1. To study the effects of greenhouse gases on the earth.
    2. To submit reports after every four-year perio
    3. To increase the concentration of greenhouse gases in the atmosphere.
    4. To decrease the concentration of greenhouse gases in the atmosphere.

    Option: A

  19. Which of the following greenhouse gases has shown a decline in the rate of increase of atmospheric concentration due to the impact of the Montreal Protocol?

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

    Option: D

  20. Which of the following is true about the trend of concentration of greenhouse gases and aerosols during 1980-89?

    Options:
    1. The concentration of atmospheric carbon dioxide increased at the rate of 0.4% per year.
    2. The concentration of atmospheric methane increased at the rate of 13 ppmv per year.
    3. The concentration of atmospheric nitrous oxide increased at the rate of 0.25% per year.
    4. The concentration of anthropogenic aerosol and precursor emissions increased over 150 years.

    Option: A