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…………is the source of many forms of energ...

…………is the source of many forms of energy

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  1. You can make a small generator to convert mechanical energy into elect...

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  2. Metling of wax is a .....

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  3. …………is the source of many forms of energy

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  4. An example of fossil fuels

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  5. The tertiary follicle further changes into mature follicle called

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  6. Rusting of iron is a ……….

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  7. Plants convert.... . Into chemical energy through photosynthesis

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  8. Example for chemical change

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  9. ln the process of burning of fuel chemi- cal energy is changed into he...

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  10. Substance which liberate a lot of t while burnig are caused.......

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  11. ...... energy is needed for the of an engine of vehicles

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  12. Digestion of food, Condensation of clouds lead to rain, Rusting of ir...

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  13. Evaporation of water, Melting of ghee, Rusting or iron, Dissolving su...

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  14. Petroleum, Natural gas, Goal, Biogas

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  15. Find out the energy changes in the following statements? An electric ...

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  16. How does coal, petroleum and natural gas are produced?

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  17. The energy sources like sunlight, wind, water and biogas are used mor...

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  18. Find out the situations where solar pan-. els are made use of and list...

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  19. What are the solutions to solve the problem of energy crisis?

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  20. Melting of' ice is a physical change while burning of magnesium is a c...

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