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Example for chemical change...

Example for chemical change

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burning of magnesium ribbon
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V PUBLICATION-THE ESSENCE OF CHANGE-QUESTION BANK
  1. Rusting of iron is a ……….

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

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  3. Example for chemical change

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

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

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

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

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

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  9. Petroleum, Natural gas, Goal, Biogas

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

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

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

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

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

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

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  16. Explain why burning of wood and cut- ting It into small pieces are con...

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  17. Curdling of milk is a permanent Change Why?

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  18. Write any two changes which are harmful in our daily life. Explain why...

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  19. Find out the energy changes in the fol- lowing statements?

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  20. When a mixer grinder is works on, electrical energy [s transferred to ...

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