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What is the difference between the burni...

What is the difference between the burning of a candle and the burning of a fuel like coal ?

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Candle burns with a flame whereas coal burns without producing a flame . Coal just glows on burning
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LAKHMIR SINGH & MANJIT KAUR-COMBUSTION AND FLAME-EXERCISES
  1. What is a flame ?

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  2. What type of substances, on burning, give a flame ?

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  3. What is the difference between the burning of a candle and the burning...

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  4. How does pouring water extinguish a fire ?

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  5. Explain how, carbon dioxide is able to control fires.

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  6. If you see a person whose clothes are on fire, how will you extinguish...

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  7. Give two examples of solid fuels.

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  8. Give two examples of liquid fuels.

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  9. Give two examples of gaseous fuels.

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  10. Name the various zones of a candle flame. Which zone (or part) of a ca...

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  11. Why does a goldsmith below air into the kerosene lamp flame with a bl...

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  12. In which zone of a candle flame : partical combustion of fuel takes pl...

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  13. In which zone of a candle flame : complete combustion of fuel takes pl...

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

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  15. What are the disadvantages of burning wood as fuel ?

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

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  17. Explain why , when a burning candle is covered with an inverted gas ja...

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

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  19. What are the combustible substances ?

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  20. Name three combustible substances .

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