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ALLEN-METALLURGY-EXERCISE -04
- Electrolytic 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 reduces FeO t...
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- Below point 'A' FeO can (a)be reduced by carbon monoxide only. (b)...
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- For the reduction of FeO at the temperature corresponding to point D, ...
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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 Al(2)...
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- Which of the following statements is correct about the role of collect...
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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 ore are concentrated by froth floatation ?
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- Which of the following reaction occur during calcination ?
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- For the meallurgical process of which of the ores calcined ore can be ...
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- The main reaction occuring in blast furnance during extraction of iron...
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- In which of the following method of purification, metal is converted t...
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- Which of the following statements are correct?
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- Extraction of chlorine from brine is based on
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- Why is an external emf of more than 2.2 V required for the extracation...
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- At temperature above 1073K, coke can be used to reduce FeO to Fe. How ...
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- Impurities of sulphur, silicon and phosphorus can be removed from cast...
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