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Can you heat water in a paper vessel? Ho...

Can you heat water in a paper vessel? How is it possible?

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NCERT TELUGU-COMBUSTION: FUELS AND FLAME-EXERCISE
  1. Use of more fuels in our daily life causes air pollution and it is har...

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

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  3. Can you heat water in a paper vessel? How is it possible?

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

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  5. Explain giving reasons: In which of the following situations water wil...

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  6. List the ways adopted by fire fighters to combat fires.

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  7. Draw the diagram of candle flame and label all the zones.

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  8. How do you organize your daily works with fuels to conserve bio-divers...

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  9. Madhu wants to avoid automobiles and started going to school by bicycl...

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  10. How do you feel about "Fuels have become a part of human life"?

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  11. Why do some materials burn and some do not?

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  12. Why do some materials which do nt burn at normal temperature burn at h...

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  13. If you lift the glass tumbler (which is placed over a burning candle) ...

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  14. How do you say that the gas released in the experiment is oxygen?

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  15. Can we replace potassium permanganate (KMnO4) with any other substance...

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  16. Is there any other procedure to prove that oxygen is needed for burnin...

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  17. Why do we keep phosphorus in water?

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  18. Why do kerosene stoves and bunsen burners have small holes in them?

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  19. It is hard to ignite match stick in rainy days. Why?

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  20. A wax candle burns with a yellow flame. The domestic gas burns when li...

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