Class 12 Geography Important Chapter 22 Selected Issues and Management: A Geographical Perspective

Class 12 Geography Important Chapter 22 Selected Issues and Management: A Geographical Perspective Solutions English Medium As Per The New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 12 Geography Important Solutions in English and select need one. AHSEC Class 12 Geography Additional Notes Download PDF. HS 2nd Year Geography Additional Solutions.

Class 12 Geography Important Chapter 22 Selected Issues and Management: A Geographical Perspective

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Selected Issues and Management: A Geographical Perspective

Chapter: 22

Group Nine: Issues and Controversies

IMPORTANT QUESTION AND ANSWER

Short Answer Questions:

1. What is pollution?

Ans: Pollution is the condition in which, mainly due to human activities, the quality standard of at least one component of soil, water, air, or the biosphere falls noticeably at the local or regional scale.

2. What is meant by pollution occurring?

Ans: When large amounts of unwanted (harmful) substances or energy enter environmental components such as soil, water, air, or living bodies and greatly disrupt their normal functions, those components are said to have become polluted.

3. Based on source, into how many categories are pollutants divided, and what are they?

Ans: Two—man-made (man-induced) pollutants and natural pollutants.

4. What are man-made pollutants?

Ans: Toxic chemicals, gases, wastes, radioactive substances, heat, light, and noise—by-products of human activities that can pollute air, water, and soil.

5. What are natural pollutants?

Ans: Pollutants associated with natural events like earthquakes, floods, landslides, lightning, and strong winds.

6. According to physical and chemical properties, into which categories are pollutants divided?

Ans: Biodegradable and non-biodegradable.

7. What is meant by biodegradable pollutants?

Ans: Pollutants such as paper, dust, decomposing refuse, and carbon dioxide that are broken down and eliminated over time by the biological activity of microorganisms.

8. What are non-biodegradable pollutants?

Ans: Pollutants like glass, plastics, various chemical compounds, and radioactive substances that microorganisms cannot degrade.

9. Based on the physical nature of the target area, into how many main types is environmental pollution divided?

Ans: Three—soil (land) pollution, water pollution, and air pollution.

10. What is soil pollution?

Ans: Continuous addition of various contaminants (pollutants) to soil due to human activities lowers its quality standards; this is called soil pollution.

11. Name the sources of soil pollution.

Ans: Physical, chemical, biological, climatic, and industrial or urbanization-related sources.

12. What is called the universal solvent? Why?

Ans: Water, because it can dissolve many substances.

13. What are the two main types of water pollution?

Ans: Suspended pollutants and dissolved pollutants.

14. Why has the water in Dal Lake become polluted?

Ans: Chemical fertilizers from agricultural fields enter the lake, causing excessive growth of aquatic plants and reducing oxygen.

15. When does acid rain occur?

Ans: When carbon dioxide in the atmosphere mixes with rainwater.