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ALLEN-METALLURGY-EXERCISE -04
- Elecyroltic refining is used to purify which of the following metals?
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- Extraction of gold and silver involves leaching the metal with CN^(-) ...
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- Choose the correct option of temperature at which carbon reduced FeO t...
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- Below point 'A' FeO can
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- For the reduction of FeO at the temperature corresponding to point D, ...
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- At the temperature corresponding to which of the points in Fig. FeO wi...
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- Which of the following options are correct?
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- In the extraction of aluminium by Hall-Heroult process purified AI(2)O...
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- Which of the following statements is correct about the role of substan...
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- In the Froth Floatation process, zinc sulphide and lead sulphide can b...
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- Common impurities present in bauxite are
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- Which of the following ores are concentrated by froth floatation?
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- Which of the following reactions occurs during calcination ?
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- For the metallurgical process of which of the ores calcined ore can be...
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- The main reaction occuring in blast furnace during the extraction of i...
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- In which of the following method of purification metal is converted to...
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- Which of the following statements are correct?
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- In the extraction of chlorine from brine
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- Why is an external emf of more than 2.2V required for the extraction o...
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- At temperature above 1073K coke can be used to reduce FeO to Fe. How c...
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