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What are the different zones present in ...

What are the different zones present in a candle and what are the colours of those zones?

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VGS PUBLICATION-BRILLIANT-COMBUSTION , FUELS AND FLAME-EXERCISE
  1. What is rapid combustion?

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  2. What is explosion?

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  3. What are the different zones present in a candle and what are the colo...

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

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  5. In an experiment 4.5kg of a fuel was completely burnt. The heat produc...

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  6. Explain how CO2 is able to control fires.

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  7. Give reasons. Paper by itself catches fire easily whereas a piece of p...

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

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  9. How do you appreciate use of fossil fuels in daily life?

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  10. Name the products formed when a candle burns in the air.

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  11. Give four examples of non-combustible materials.

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  12. Why is water not suitable as fire extinguisher for fires involving oil...

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

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  14. Which type of substances give flame?

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  15. What would happen if oxygen stops to support combustion? Make a guess....

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  16. Let us assume that you are on the moon. If you try to focus sunlight o...

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  17. "Is combustion possible without the supply of oxygen? Discuss with you...

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  18. Water is not used to control fires involving electrical equipment.Why?

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  19. Give reasons. Paper by itself catches fire easily whereas a piece of p...

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  20. Explain how CO2 is able to control fires.

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