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Why is combustion known as a chemical pr...

Why is combustion known as a chemical process? Discuss.

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### Step-by-Step Text Solution: 1. **Definition of Combustion**: - Combustion is a chemical reaction that occurs when a substance (usually a fuel) reacts rapidly with oxygen, producing heat and light. 2. **Chemical Changes**: - During combustion, the original substances undergo a chemical change. For example, when hydrogen gas (H₂) combusts in the presence of oxygen (O₂), it forms water (H₂O). This transformation indicates that the chemical properties of the substances involved have changed. ...
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PEARSON IIT JEE FOUNDATION-COMBUSTION AND FLAME -CLASSROOM CORNER Short Answer Type Questions
  1. Why is combustion known as a chemical process? Discuss.

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  2. Explain why does a matchstick produce a flame on burning.

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  3. Why do goldsmiths use the outermost zone of the flame for melting gold...

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  4. What do you understand by fuel?

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  5. Why is sulphur not used as a fuel even though it can burn in air to pr...

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  6. Can the process of rusting be called combustion? Discuss.

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  7. The water heated by Ramesh will get heated in a shorter time because h...

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  8. It is difficult to burn a heap of green leaves but dry leaves catch fi...

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  9. Which zone of a flame does a goldsmith use for melting gold and silver...

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  10. Explain how is CO(2) able to control fire?

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  11. Give reasons. Water is not used to control fires involving electrica...

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  12. Give reasons for the following : LPG is a better domestic fuel than wo...

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  13. Give reason for the following : paper by itself catches fire easily ...

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  14. Explain how the use of CNG in automobiles has reduced pollution in our...

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  15. Compare LPG and wood as fuels.

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  16. Does all combustible substances give out a flame while burning?

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  17. Why does charcoal not produce flame?

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  18. Which fuel does not burn with a flame? Comment.

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  19. Does magnesium burn with a flame? Explain in your own words.

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  20. Explain why how flame is formed.

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