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USHA PUBLICATION-GENERL PRINCIPAL AND PROCESS OF ISOLATION OF ELEMENTS-EXERCISE
- Which of the following is a sulphide ore ?
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- The furance used for extraction of iron from haematite is called
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- Leaching is a process of ores.
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- Which of the following pairs consists of minerals of the same metal ?
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- Electrolytic reduction process is used for the extraction of
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- The function of flux during smelting of ore is
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- In Goldschmidt thermite process the reducing agent is .
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- To obtain chromium from chromite the method used is .
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- Complex formation method is used for extraction of .
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- The process in which metal is obtained in molten state is called as of...
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- Electrolytic reduction technique is used for extraction of
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- Cryolite is .
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- Heating of sulphide ore in presence of air is called as .
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- The furnace lining in steel manufacture consists of
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- The furance which gives highest temperature is .
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- Which of the following is not a basic flux ?
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- Nickel can be purified by process.
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- In aluminothermic process, aluminium is used as
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- Extraction of zinc from zinc blende is achived by
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- Which of the following metals exists as nuggets?
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