Coal

Front

What is coal?

Back

Coal is a combustible black or brownish-black sedimentary rock formed from decayed plant material, primarily composed of carbon, along with other elements such as hydrogen, sulfur, oxygen, and nitrogen.

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What are the main types of coal?

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The main types of coal are anthracite, bituminous, sub-bituminous, and lignite, classified based on carbon content and energy output.

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Why does anthracite coal burn cleaner than bituminous coal?

Back

Anthracite coal burns cleaner than bituminous coal because it has a higher concentration of carbon, resulting in less smoke and pollutants when burned.

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What is the primary use of coal?

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The primary use of coal is for electricity production, where it is burned to generate steam that drives turbines.

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What are the dangers of underground coal mining?

Back

Underground coal mining is dangerous due to risks such as roof collapses, gas explosions, and flooding.

Front

Which countries have the largest coal reserves?

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The countries with the largest coal reserves are China, the United States, Russia, and India.

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What is the most plentiful fossil fuel?

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Coal is the most plentiful fossil fuel, widely used for energy production.

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What is the environmental impact of coal mining?

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Coal mining can lead to deforestation, habitat destruction, and pollution of air and water resources.

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How is coal formed?

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Coal is formed from the remains of ancient plants that were buried under layers of soil and rock, subjected to heat and pressure over millions of years.

Front

What is the difference between renewable and non-renewable energy sources?

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Renewable energy sources can be replenished naturally (like solar and wind), while non-renewable sources (like coal and oil) are finite and will deplete over time.