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Fill in the blanks. ……was used in manufa...

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

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NCERT TELUGU-COMBUSTION: FUELS AND FLAME-EXERCISE
  1. Fill in the Blanks:………………is necessary for combustion.

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

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

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  4. Coal tar is used in manufacture of

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

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

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

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

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

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

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

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

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  13. Which one of the following is non combustible

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  14. Name the fuel that is commonly used by most of the people

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  15. Which of the following is used as a rocket fuel?

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  16. The substance that catches fire at room temperature by heat

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  17. Can we separate alcohol dissolved in water by using a separating funne...

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  18. Which one of the following is suggested for vehicles,.

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  19. Removing the unburnt materials from a heap of paper which caught fire

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  20. Electrical fires can be controlled by

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