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NARAYNA-METALLURGY-EXERCISE-1 (CLASS WORK) (EXTRACTION OF METALS)
- The process in which the ore is heated in excess of air below its metl...
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- In roasting
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- The role of calcination in metallurgical operation is
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- In roasting the ores are generally converted into
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- The most common method of extraction of metals from oxide ores involve
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- Slag is a product of:
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- Which of the following metal can not be extracted by smelting process
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- The reducing agent used in thermite process is
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- The chemical reagent used for leaching of gold and silver ores is
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- The slag obtained during the extraction of copper from coper pyrites i...
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- The metal which can be extracted from pyrolusite ore is:
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- Which metal can not obtained by electrolysis of their aqueous salt sol...
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- Which one of the following reactions is an example for calcination pro...
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- Which of the following elements is extracted commercially by the elect...
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- In the extractionof iron, slag is produced. Slag is
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- Thomas slag is
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- DeltaG^(Ө) vs T plot in Ellingham diagram slopes downward for the reac...
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- Which has highest melting point ?
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