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Give reasons. Paper by itself catches fi...

Give reasons.
Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

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VGS PUBLICATION-BRILLIANT-COMBUSTION , FUELS AND FLAME-EXERCISE
  1. "Is combustion possible without the supply of oxygen? Discuss with you...

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

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

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  4. Explain how CO2 is able to control fires.

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  5. What are the three essential requirements for producing fire?

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  6. Why "CNG" being used as a fuel for vehicles?

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  7. Whether rusting is combustion reaction or not ? Why

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

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

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

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

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  12. In a few years the fuels on earth will be exhausted. Think, what would...

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  13. Spirit burns quickly like petrol but sodium metal and white phosphorou...

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  14. Why a wick is not used in gas burners?

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  15. Give supporting arguments for both the statements (1) fire is useful (...

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  16. Use of more fuels in our daily life causes air pollution and it is har...

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  17. Collect information about the history of spherical mirrors in human ci...

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

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  19. How does candle work?

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  20. Give reasons. LPG is a better domestic fuel than wood.

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