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Coal and Petroleum Video Lecture | NCERT Video Summary: Class 6 to Class 12 (English) - UPSC
FAQs on Coal and Petroleum Video Lecture - NCERT Video Summary: Class 6 to Class 12 (English) - UPSC
| 1. What are the primary sources of coal and petroleum? |  |
Ans. The primary source of coal is the decomposition of plant materials in swampy areas over millions of years. Petroleum, on the other hand, is formed from the remains of tiny marine organisms buried under layers of sediment and subjected to heat and pressure over geological time.
| 2. How is coal extracted and processed? | |
Ans. Coal is extracted through methods such as surface mining and underground mining. After extraction, it is processed to remove impurities and improve its quality. This includes crushing, washing, and sometimes blending different grades to achieve desired specifications for various uses.
| 3. What are the environmental impacts of coal and petroleum usage? | |
Ans. The use of coal and petroleum contributes to air pollution, greenhouse gas emissions, and global warming. Coal burning releases sulfur dioxide, nitrogen oxides, and particulate matter, while petroleum combustion leads to carbon dioxide emissions and oil spills, affecting ecosystems and biodiversity.
| 4. What are the major uses of coal and petroleum? | |
Ans. Coal is primarily used for electricity generation, steel production, and as a fuel for industrial processes. Petroleum is mainly used for transportation fuels (like gasoline and diesel), heating, and as a raw material for petrochemicals used in various products, including plastics and fertilizers.
| 5. What are the alternatives to coal and petroleum? | |
Ans. Alternatives to coal and petroleum include renewable energy sources such as solar, wind, hydroelectric, and biomass. Additionally, nuclear energy and natural gas are considered cleaner alternatives that can help reduce dependence on fossil fuels and lower environmental impacts.
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