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MODERN PUBLICATION-GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS-EXERCISE
- During smelting, an additional substance is added which combines with ...
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- A basic lining is given to a furnace by using
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- Purification of silicon element used in semiconductors is done by :
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- Which is the incorrect statement in the following ?
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- Most abundant metal on the surface of earth is :
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- Silver containing lead as impurity is purified by :
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- The important ore of iron is :
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- The lustre of a metal is due to
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- The metal extracted by cyanide process is :
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- Malachite is an ore of :
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- Cassiterite is an ore of:
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- In the electrolytic process for the extraction of aluminium the electr...
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- Heating pyrites to remove sulphur is called
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- In the extraction of iron, the slag produced is :
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- The process of converting hydrated alumina into anhydrous alumina is c...
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- Nickel is purified by thermal decomposition of its :
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- The most abundant element in the earth's crust (by weight) is :
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- In the thermite process, the reducing agent is :
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- What is mean by pyrometallurgy ?
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- Which of the following process is used in the extractive metallurgy of...
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