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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II
- Which of the following metals does not occur as oxide ?
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- Calcinations is carried out in a :
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- A metal obtained by hydrometallurgy is :
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- Serpeck's process is used for the extraction of :
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- Which of the following relations is correct ?
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- Copper pyrites , the chief ore of copper , is chemically :
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- Which of the following is malachite ore ?
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- The roasting of HgS in air produces :
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- The formula of siderite ore is
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- Copper is refined by :
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- which of the following is not a basic flux ?
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- An example of halide ore is :
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- The sulphide ores are generally concentrated by :
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- Carbon reduction method is used in the extraction of :
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- The process of removal of impurities form a crude metal is called :
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- The common depressant used in froth floatation process for separation ...
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- When copper ore is mixed with silica in a reverberatory furnace copper...
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- Which of the following reactions is an example of auto reduction ?
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- In the extraction of copper from its sulphide ore, the metal is formed...
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- Electrolytic refining is used to purify which of the following metal...
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