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Give reason for the following : paper ...

Give reason for the following :
paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

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The ignition temperature of paper is less, so it caches fire easily. It does not catch fire when wrapped around aluminium absorbs the heat, so paper does not attain its ignition temperature.
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PEARSON IIT JEE FOUNDATION-COMBUSTION AND FLAME -CLASSROOM CORNER Short Answer Type Questions
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  2. Give reasons for the following : LPG is a better domestic fuel than wo...

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

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

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  5. Compare LPG and wood as fuels.

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

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  7. Why does charcoal not produce flame?

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

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

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  10. Explain why how flame is formed.

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  11. Define incomplete and complete combustion.

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  12. Why is magnesium so flammable? Justify your answer.

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  13. What colour flame is the coolest in a candle?

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  14. How does water poured on a burning log of wood help extinguish the fir...

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  15. Why LPG is stored in liquid form?

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  16. Why are gas bottles formed in the shape of a cylinder?

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  17. Why is liquid stored in cylinders rather than boxes like other cargo?

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  18. Discuss what happens when LPG leaks.

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  19. Why is blue fire considered the hottest?

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  20. What is the coldest fire color in a candle flame?

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