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MODERN PUBLICATION-GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS-EXERCISE
- Which substance is used as basic refractory material in furnace :
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- Iron ores are dressed by :
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- Which metal can be purified by distillation ?
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- The correct statement is :
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- Galena is an ore of :
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- To obtain chromium from chromic oxide Cr2O3,The method used is :
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- Argentite is a mineral of :
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- Cinnabar is :
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- What is Tyndall effect? What is it due to?
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- Which of the following is the heaviest metal ?
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- Silicon is the main constituent of :
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- The furnace which provides the higest temperture is :
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- Which is not a mineral of aluminium:
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- Carnallite is a mineral of :
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- Polling process is used :
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- Mond process is used in the extraction of :
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- Heating of carbonate ores to remove carbon is called as :
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- In metallurgical process , the flux used for removing basic impurities...
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- Element easily reducible is :
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- In electrorefining process the impure metal is made as .
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