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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
- Give the name of one metal each occuring as: sulphide?
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- Give the name of one metal each occuring as: halide.
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- Name two metals which are found in nature the free state.
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- The rockey material found with ores is known as…………….
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- Conversion of sulphide ore into an oxide by heating in excess of air i...
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- Froth floatation process is used for the concentration of ……………..ores.
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- Cinnabar is an ore of
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- Name the substance oxidised, reduced, oxidising agent, reducing agent ...
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- Name two metals which are not corroded easily
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- What is rusting? What is the chemical formula of rust?
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- Percentage of gold in 18 carat gold is:
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- Name two conditions necessary for rusting of iron.
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- What is the composition of bronze metal alloy?
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- Which is the common metal in brass and bronze?
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- Which is the common consitutent of all amalgams?
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- How will you convert 24 carat gold into 22 carat gold for making ornam...
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- Name the consituents of stainless steel.
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- Decide the following pairs will react. If they react complete the rea...
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- Decide which of the following pairs will react. If they react complete...
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- Decide which of the following pairs will react. If they react complete...
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