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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
- Pure gold is ………………..carat.
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- What are alloys?
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- Define roasting.
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- Name two metals which do not react with oxygen.
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- Explain why surface of some metals acquired a dull appearance when exp...
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- What would you observe when zinc is added to a solution of iron sulpha...
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- Define corrosion of metals?
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- Explain,why metals are good conductors of heat and electricity?
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- Explain the meaning of malleable and ductile
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- What is meant by a reactivity series of metals? Arrange the following ...
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- You are given an iron strip. How will you make it into a magnet?
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- What is difference between minerals and ores?
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- Define the terms 'metallurgy' and 'gangue'.
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- Explain, why carbon can reduce copper but not calcium oxide to calcium...
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- Write the importance of MOET.
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- Write chemical equations for the reactions taking place at the two ele...
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- Write any two differences between morula and blastula.
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- What happens when aluminium wire is heated in air? Give equation.
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- How is impure metal refined electrolytically?
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- Explain the meaning of malleable and ductile
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