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Write chemical equations for the followi...

Write chemical equations for the following:
Chromium oxide is heated with aluminium.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Why does calcium metal after reacting with water starts floating on i...

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  2. Write chemical equations for the following: Lead carbonate is calcined...

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  3. Write chemical equations for the following: Chromium oxide is heated w...

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  4. Write chemical equations for the rection on Zn granules with dil H2SO4...

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  5. Write chemical equations for the rection on Zn granules with Sodium h...

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  6. Write chemical equations for the extraction of copper from its sulpide...

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  7. When metals are treated with mineral acids, hydrogen gas is liberated ...

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  8. A metal that exists as a liquid at room temperature is obtained by hea...

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  9. Metals undergo corrosion with water and oxygen present in air. Write t...

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  10. Compelte the reaction: NaBr+Cl2rarr

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  11. Complete the reaction: Fe(s)+dil H2SO4rarr

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  12. Name two metals which readily burn in air and two metals which do not ...

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  13. Name one metal which reacts with cold water

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  14. Name a metal which is extracted by reduction with aluminium powder.

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  15. What is the nature of metal oxides?

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  16. Why do non-metals not conduct electricity?

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  17. Why do shop keepers apply oil on tools made of iron while storing them...

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  18. What is difference between minerals and ores?

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  19. Define calcination.

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  20. What is the formula of bauxite?

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