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What is difference between minerals and ...

What is difference between minerals and ores?

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. What is meant by a reactivity series of metals? Arrange the following ...

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  2. You are given an iron strip. How will you make it into a magnet?

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  3. What is difference between minerals and ores?

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  4. Define the terms 'metallurgy' and 'gangue'.

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  5. Explain, why carbon can reduce copper but not calcium oxide to calcium...

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  6. Write the importance of MOET.

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  7. Write chemical equations for the reactions taking place at the two ele...

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  8. Write any two differences between morula and blastula.

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

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  10. How is impure metal refined electrolytically?

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  11. Explain the meaning of malleable and ductile

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  12. Why do solids have a definite volume ?

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  13. Giving examples, differentiate between roasting and calcination.

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

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

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  16. State two ways to prevent the rusting of iron

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

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

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

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

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