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MODERN PUBLICATION-GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS-EXERCISE
- Calamine is an ore of
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- Less reactive metals Au ,pt mostly occur in .
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- Chemically reactive metals occur in .
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- Chemical method used in concentration of ore is called .
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- Nickel is refined by process.
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- Paramagnetic character of transition elements is due to .
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- The hardness of iron is mostly due to the presence of .
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- Composition of copper matel is .
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- The purity of blistered copper is .
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- Copper metal obtained from Bessemer converter is known as .
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- Blue vitriol is .
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- Cast iron contains maximum percentage of .
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- Azurite is the ore of .
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- Bell metal is an alloy of and .
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- German silver is alloys of .
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- Mohr.s salt is .
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- Galvanised iron sheets have coating of :
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- FeSO4. 7H2O is known as
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- Percentage of carbon in steel is .
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- Brass contains .
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