Class 11 Environmental Studies Important Chapter 6 Social Issues and Environment Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 11 Environmental Studies Important Solutions and select need one. AHSEC Class 11 Environmental Education Additional Notes English Medium Download PDF. HS 1st Year Environmental Studies Important Solutions in English.
Class 11 Environmental Studies Important Chapter 6 Social Issues and Environment
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. ASSEB Class 11 Environmental Studies Additional Question Answer are part of All Subject Solutions. Here we have given HS 1st Year Environmental Studies Important Notes in English for All Chapters, You can practice these here.
Social Issues and Environment
Chapter: 6
| UNIT- I : Environmental Education |
| IMPORTANT QUESTION AND ANSWER |
Short Question and Answer:
1. Who wrote Our Common Future?
Ans: Our Common Future was written by G.H. Brundtland.
2. Give an example of a renewable source of energy.
Ans: An example of a renewable source of energy is solar energy.
3. Give an example of a non-renewable source of energy.
Ans: An example of a non-renewable source of energy is coal.
4. What is the meaning of energy conservation?
Ans: Energy conservation means reducing energy consumption and using it more efficiently.
5. What percentage of ozone gas is depleted over Antarctica?
Ans: About 30% of ozone gas is depleted over Antarctica.
6. After 30 years, what gas is produced when CFC breaks down in the stratosphere?
Ans: After 30 years, CFC breaks down in the stratosphere and produces free chlorine gas.
7. Due to the greenhouse effect, what is the average surface temperature of the Earth?
Ans: Due to the greenhouse effect, the average surface temperature of the Earth is about 15°C.
8. According to whom is health a complete state of physical, mental, and social well-being?
Ans: According to the World Health Organization (WHO), health is a complete state of physical, mental, and social well-being.
9. What is ozone?
Ans: Ozone is a pale blue-colored gas.
10. In which part of the century was environmental protection emphasized along with sustainable development programs?
Ans: In the latter part of the 20th century, environmental protection was emphasized along with sustainable development programs.
11. How many ozone molecules does one CFC molecule destroy by acting as a catalyst?
Ans: One CFC molecule destroys about 100,000 ozone molecules by acting as a catalyst.
12. More than 109 kilograms of what is produced annually worldwide?
Ans: More than 109 kilograms of CFC is produced annually worldwide.
13. Between 1969 and 1986, what percentage of ozone was reduced in the Northern Hemisphere?
Ans: Between 1969 and 1986, ozone levels in the Northern Hemisphere decreased by 3%.
14. According to Brundtland, what is sustainable development?
Ans: According to Brundtland, sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
15. Up to what altitude from the Earth’s surface does ozone spread?
Ans: Ozone spreads up to an altitude of 50 kilometers from the Earth’s surface.
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