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How is impure metal refined electrolytic...

How is impure metal refined electrolytically?

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Write any two differences between morula and blastula.

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  2. What happens when aluminium wire is heated in air? Give equation.

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  3. How is impure metal refined electrolytically?

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  4. Explain the meaning of malleable and ductile

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  5. Why do solids have a definite volume ?

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  6. Giving examples, differentiate between roasting and calcination.

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  7. Name two metals which will displace hydrogen from dilute acids, and tw...

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  8. T/F Carbonate and sulphide ores are usually converted into oxides.

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  9. State two ways to prevent the rusting of iron

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  10. What is 24 carat gold? How would you convert into 18 carat gold?

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  11. Sodium amalgam is a mixture of ............. and mercury.

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  12. The colour of hydrated copper sulphate is……………and that of anhydrous co...

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  13. T/F The process of covering iron with Zn is called galvanization.

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  14. Fill ups Out of Al,Zn and Ag only…………..cannot displace hydrogen form d...

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  15. Define the terms metals, non-metals and metaloids. Give one example in...

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  16. Discuss the reactivity of metals with oxygen with examples.

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  17. Give the chemical formula and name of the metals whose ores are the fo...

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  18. Give the chemical formula and name of the metals whose ores are the fo...

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  19. Give the chemical formula and name of the metals whose ores are the fo...

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  20. Give the chemical formula and name of the metals whose ores are the fo...

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