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Give four examples of combustible materi...

Give four examples of combustible materials

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NCERT TELUGU-COMBUSTION: FUELS AND FLAME-EXERCISE
  1. Give four examples of combustible materials

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  2. Give four examples of non-combustible materials.

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  3. Why should not we store spirit or petrol near our living place?

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  4. Give an example of a good fuel. How do you choose that fuel? Explain.

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  5. The oil fires should not be sprayed with water. Why?

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  6. What precautions are to be taken while pouring water on fire?

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

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

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  9. It is difficult to burn a heap of green leaves but not a heap of dry l...

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

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

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  12. What would happen if oxygen stops to support combustion? Make a guess....

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

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

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

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

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

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

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

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

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