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Fill in the following blank with a suitable word :
The amount of heat produced by burning a unit mass of a fuel completely is known as its …………… value.

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calorific value
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LAKHMIR SINGH & MANJIT KAUR-COMBUSTION AND FLAME-EXERCISES
  1. Fill in the following blanks with suitable words : Fire produced by ...

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  2. Fill in the following blanks with suitable words : A liquis fuel use...

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  3. Fill in the following blank with a suitable word : The amount of he...

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  4. Fill in the following blanks with suitable words : The substances w...

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  5. Fill in the following blanks with suitable words : Burning of wood a...

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  6. What are fuels ?

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  7. Name any two common fuels.

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  8. State any four characteristics of an ideal fuel (or good fuel).

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  9. Define the calorific value of a fuel.

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  10. "The calorific value of LPG is 55000 kj/kg". What does it mean ?

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  11. Can you burn a piece of wood by bringing a lighted matchstick near it ...

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  12. Why do you have to use paper or kerosene oil to start fire in wood ar ...

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  13. What is meant by rapid combustion ?

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  14. Give one example of rapid combustion.

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  15. What is meant by explosive combustion (or explosion) ?

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  16. Give one example of explosive combustion (or explosion)

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  17. How will you show that air is necessary for combustion ?

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  18. Can the process fo rusting be called combustion ? Give reason for your...

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  19. Why are fires produced by burning oil not extinguished by pouring wate...

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  20. Explain why, fire caused by electricity should not be extinguished by ...

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