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List conditions under which combustion c...

List conditions under which combustion can take place.

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PSEB-COMBUSTION AND FLAMES-EXERCISE
  1. List conditions under which combustion can take place.

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  2. Fill in the blanks. Burning of wood and coal causes…………….. Of air.

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  3. Fill in the blanks. A liquid fuel ,used in homes is………………

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  4. Fill in the blanks . Fuel must be heated to its ………………..before it sta...

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  5. Fire produced by oil cannot be controlled by……………………….

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  6. Explain how the use CNG in automobiles has reduced pollution in our ci...

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  7. Compare LPG and wood as fuels.

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  8. Give reason : Water is not used to control fire involving electrical ...

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  9. Give reason: LPG is better domestic fuel than wood .

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  10. Give reason : Paper by itself catches fire easily whereas a piece of...

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  11. Make labelled diagram of candle flame.

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  12. Name the unit in which calorific value of a fuel is expressed.

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  13. Explain how CO2 is able to contrl fires.

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

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

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  16. In an experiment 4.5 kg of a fuel was completely burnt. The heat produ...

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

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  18. Abida and Ramesh were doing an experiment in which water to be heated...

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