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What do you understand by calorific valu...

What do you understand by calorific value of a fuel?

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Calorific value of a fuel is the amount of heat liberated by complete burning of a unit mass or volume of a fuel.
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  1. Natural was formed millions of years ago along with petroleum when mic...

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  2. Natural was formed millions of years ago along with petroleum when mic...

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  3. What do you understand by calorific value of a fuel?

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  4. Give two characteristics features of an ideal fuel.

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  5. Can we use all our natural resources forever?

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  6. Can air, water and soil be exhausted by human activities?

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  7. Is water a limit less source?

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  8. Name the petroleum product used for surfacing of roads.

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  9. Explain why fossil fuels are exhaustible natural resources

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  10. Assertion: Anthracite is the purest form of coal. Reason: It contain...

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  11. Assertion : CNG and LPG are clean fuels. Reason : They do not leave...

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  12. Assertion : Petrol is more volatile than diesel oil. Reason : Petrol...

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  13. Assertion: Charcoal does not produce any smoke. Reason: Charcoal con...

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  14. Assertion : Kerosene is a fossil fuel. Reason : Kerosene is not obt...

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  15. Give reasons for each of the following: A foul smelling chemical is ...

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  16. Give reasons for each of the following: Coal, petroleum and natural ...

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  17. Give reasons for each of the following: Natural gas is always found ...

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  18. Complete the table given below with information about fossil fuels.

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  19. Write any two points of difference between renewable and non renewable...

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  20. Describe how petroleum is formed from the remains of marine plants and...

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