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What is meant by a reactivity series of ...

What is meant by a reactivity series of metals? Arrange the following metals in increasing order of their reactivities towards water:
zinc, iron,magnesium, sodium.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Explain,why metals are good conductors of heat and electricity?

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  2. Explain the meaning of malleable and ductile

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  3. What is meant by a reactivity series of metals? Arrange the following ...

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

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  5. What is difference between minerals and ores?

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

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

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  8. Write the importance of MOET.

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

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  10. Write any two differences between morula and blastula.

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

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  12. How is impure metal refined electrolytically?

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  13. Explain the meaning of malleable and ductile

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  14. Why do solids have a definite volume ?

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  15. Giving examples, differentiate between roasting and calcination.

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

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

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  18. State two ways to prevent the rusting of iron

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

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

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