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ALLEN-METALLURGY-EXERCISE -04
- When copper ore is mixed with silica in a reverberatory furnace, coppe...
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- Which of the following reaction is an example of autoreduction?
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- A number of elements are available in earth's crust but most abundant ...
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- Zone refining is based on the principle that
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- In the exteraction of copper from its sulphide ore, the metal is fanal...
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- Brine is electrolysed by using inert electrodes. The reaction at anode...
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- In the metallurgy of aluminium
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- 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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