Class 8 Exam > Class 8 Questions > Coal burns witha)flameb)both flame and glowc)...
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Coal burns with
- a)flame
- b)both flame and glow
- c)only glow
- d)none of these.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Coal burns witha)flameb)both flame and glowc)only glowd)none of these....
Understanding Coal Combustion
Coal is a fossil fuel that undergoes combustion to release energy. When coal burns, it exhibits distinct characteristics.
Combustion Characteristics of Coal
- Flame Production:
- When coal is ignited, it can produce a flame, especially if it contains volatile substances. These volatiles ignite and create a visible flame during combustion.
- Glow Production:
- As the coal continues to burn, especially at higher temperatures, it also emits a glow. This is due to the incandescent carbon particles that are present in the coal.
Combined Effects
- Both Flame and Glow:
- The correct answer is option 'B' because burning coal typically produces both a flame (from gaseous emissions) and a glow (from the solid carbon particles).
- The flame is often yellowish and flickering, while the glow is a result of the heat generated from the burning coal, which causes the solid carbon and other residues to emit light.
Conclusion
- In summary, the combustion of coal results in both flame and glow, making option 'B' the correct choice. This dual phenomenon is crucial to understanding how coal functions as a fuel in various applications, including power generation and heating.
Coal is a fossil fuel that undergoes combustion to release energy. When coal burns, it exhibits distinct characteristics.
Combustion Characteristics of Coal
- Flame Production:
- When coal is ignited, it can produce a flame, especially if it contains volatile substances. These volatiles ignite and create a visible flame during combustion.
- Glow Production:
- As the coal continues to burn, especially at higher temperatures, it also emits a glow. This is due to the incandescent carbon particles that are present in the coal.
Combined Effects
- Both Flame and Glow:
- The correct answer is option 'B' because burning coal typically produces both a flame (from gaseous emissions) and a glow (from the solid carbon particles).
- The flame is often yellowish and flickering, while the glow is a result of the heat generated from the burning coal, which causes the solid carbon and other residues to emit light.
Conclusion
- In summary, the combustion of coal results in both flame and glow, making option 'B' the correct choice. This dual phenomenon is crucial to understanding how coal functions as a fuel in various applications, including power generation and heating.
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Community Answer
Coal burns witha)flameb)both flame and glowc)only glowd)none of these....
Coal is a natural fossil fuel that can burn with both a flame and glow. The flame is produced due to the volatile matter present in coal, which vaporizes and ignites, while the glow is due to the combustion of the solid carbon content. Therefore, coal can exhibit both flame and glow when it burns.
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Coal burns witha)flameb)both flame and glowc)only glowd)none of these.Correct answer is option 'B'. Can you explain this answer?
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Coal burns witha)flameb)both flame and glowc)only glowd)none of these.Correct answer is option 'B'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Coal burns witha)flameb)both flame and glowc)only glowd)none of these.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Coal burns witha)flameb)both flame and glowc)only glowd)none of these.Correct answer is option 'B'. Can you explain this answer?.
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