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What is meant by 'combustion' ? Explain ...

What is meant by 'combustion' ? Explain with an example.

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LAKHMIR SINGH & MANJIT KAUR-COMBUSTION AND FLAME-EXERCISES
  1. What are non-combustion substances ?

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  2. Name three non-combustion substances.

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  3. What is meant by 'combustion' ? Explain with an example.

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  4. What are the conditions necessary for combustion to take place ?

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  5. Make a labelled diagram of a candle flame.

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  6. What makes the middle zone of a candle flame luminous (or light-giving...

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  7. What is global warming?

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  8. Name the gase whose increasing percentage in air in leading to global ...

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  9. State a harmful effect which can be caused by global warming.

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  10. Explain how, burning of fuels such as coal, petrol and diesel leads to...

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  11. Which of the following substances has the lowest ignition temperature ...

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  12. One of the following is not a combustible substance. This one is :

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  13. Which of the following is not used in making matchsticks these days ?

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  14. Which of the following undergoes spontaneous combustion ?

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  15. Which of the following statement is not correct about carbon dioxide a...

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  16. Fires in underground coal mines usually occur due to the :

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  17. The calorific value of a fuel is 40000 kj/kg. This fuel is most likely...

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  18. Which of the following has the fuels has the highest calorific value ?

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  19. On a cold winter night, the persons sleeping in a room with closed do...

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  20. Which of the following burns without producing a flame ?

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