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Explain giving reasons: In which of the ...

Explain giving reasons: In which of the following situations water will get hearted in shorter time?
Sonu kept water beaker in the outermost part of the flame.

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VGS PUBLICATION-BRILLIANT-COMBUSTION , FUELS AND FLAME-EXERCISE
  1. Draw the diagram of candle flame and label all the zones.

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

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

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

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

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

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

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

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

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

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  11. How does candle work?

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

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

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  14. The example for combustible material

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  15. The example for non-combustible material

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  16. The gas needed for combustion among the following is

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  17. Fire produced by oil cannot be controlled by .

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  18. Fuel must be heated to its temperature before it starts burning.

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  19. The outermostzone of candle is in colour.

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  20. zone of candle is least hot.

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