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MBD PUBLICATION-GENERAL PRINCIPLES OF ISOLATION OF ELEMENTS-QUESTION BANK
- Ferric oxide in blast furnance is reduced by :
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- Electric furnaces are lined with magnesia because :
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- High purity copper metal is obtained by :
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- Which element is purified by zone refining ?
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- Gold is found usually near ……. Minerals.
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- CO is used in the metallurgy of :
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- Chalcogens are :
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- wulfenite ( a yellow - red mineral ) having waxy lusture occurs in lea...
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- Slag coming out at the bottom of a blast furance during extraction of ...
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- Which element occurs in free state in nature ?
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- Which of the following is a metal ?
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- Leaching process is used to get :-
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- Roasting is used in the extraction of :
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- Pollucite is an ore of :
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- Which among the following has highest electrical conductivty ?
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- Mg burns with a brilliant flame.This property is used in:
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- Which is not an ore ?
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- Which is not an ore :
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- Heating of pyrite ores in air to remove sulphur is known as :
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- Among the following group of oxides, the group containing oxides that ...
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