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Fill in the Blanks:…………….fuels have more...

Fill in the Blanks:…………….fuels have more calorific value.

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NCERT TELUGU-COMBUSTION: FUELS AND FLAME-EXERCISE
  1. Which one of the following is eco-friendly fuel

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  2. Fill in the Blanks:…………….is a combustible substance.

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  3. Fill in the Blanks:…………….fuels have more calorific value.

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  4. Fill in the Blanks:………………is necessary for combustion.

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  5. Fill in the Blanks:Goldsmiths use ……………… zone of flame for making orna...

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  6. Fill in the Blanks:Oil fires cannot be controlled by………………….

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  7. Fill in the Blanks:The amount of heat produced by burning I kg fuel is...

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  8. Fill in the Blanks:Burning of cow dung cakes cause…………………

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  9. Fill in the Blanks:Vehicles emit…………..gases.

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  10. Fill in the Blanks:………………is necessary for combustion.

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  11. FILL IN THE BLANKS : When coal is heated in the absence of air we get ...

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  12. Fill in the blanks. ……was used in manufacture of steel.

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  13. Coal tar is used in manufacture of

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  14. Fill in the Blanks:Petrol is obtained from petroleum by……………….

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  15. Fill in the Blanks:Solar energy is………………

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  16. Fill in the Blanks:examples Renewable sources are………………..

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  17. Write an activity to prove that oxygen helps in burning.

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

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

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

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