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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
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LAKHMIR SINGH & MANJIT KAUR-SOURCES OF ENERGY -Exercise
  1. Define ignition temperature of a fuel.

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  2. 'The ignition temperature of a fuel is 80^(@)C. What does this mean ?

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

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  4. What is a source of energy ? What are the two main categories of the s...

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  5. State any four characteristics of a good source of energy.

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  6. What is meant by a non-renewable source of energy ? Give two example o...

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  7. What is meant by a renewable source of energy ? Give two example of re...

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  8. What are renewable and non-renewable sources of energy ? Give examples...

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  9. Why are fossil fuels classified as non-renewable sources of energy ?

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  10. Name two energy sources that you would consider to be renewable. Give ...

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  11. Name two sources of energy which you consider to be non-renewable. Giv...

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  12. (a) Classify the following into renewable and non-renewable sources of...

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  13. Coal is said to be formed from the wood of trees. Why then is coal con...

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  14. (a) What is a fuel ? Give five examples of fuels. (b) What are th...

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  15. An example of a renewable source of energy is :

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  16. A non-renewable source of energy is :

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  17. Which of the following is not a renewable source of energy ?

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  18. What is a good fuel ?

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  19. The fuel having a calorific value of 55 kJ/g is likely to be :

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  20. A newly planted sapling usually grows and matures into a tree in more ...

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