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MODERN PUBLICATION-GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS-EXERCISE
- Metal always found in free state is :
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- The process of removal of gangue particles from ores is known as :
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- Barytes ore is :
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- Which statement is correct ?
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- Mond process is used in the extraction of :
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- Roasting is generally carried out in case of :
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- Metal occur in the native form because of their
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- Which pair of elements can from alloy ?
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- Specific gravity of slag is :
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- Sperrylite is :
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- Which process is used for the purification of Al metal ?
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- Oil used as frother in froth floatation process
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- 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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