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Which of the following metal is purified by distillation process?
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Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)
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Semiconductor of very high purity are obtained by
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Match the following:
| List-I | List-II | ||
| (A) | Zone refining | (I) | Indium |
| (B) | Poling | (II) | Titanium |
| (C) | Van-Arkel method | (III) | Nickel |
| (D) | Mond process | (IV) | Blister copper |
| (V) | Zinc |
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Electrolytic refining is used to purify which of the following metals?
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Match list-I with list-II :
| List-I | List-II | ||
| (a) | Mercury | (i) | Vapour phase refining |
| (b) | Copper | (ii) | Distillation refining |
| (c) | Silicon | (iii) | Electrolytic refining |
| (d) | Nickel | (iv) | Zone refining |
Choose the most appropriate answer from the option given below:
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Boron and silicon of very high purity can be obtained through :
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Which of the following refining process yields pure zinc?
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The pair of metals refined by "vapour phase refining" is
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forms a volatile compound with
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The element that can be refined by distillation is :
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Match the elements in Column I with methods of purification in Column II.
| Column-I | Column-II | ||
| (a) | Boron | (p) | Van Arkel method |
| (b) | Tin | (q) | Mond's process |
| (c) | Zirconium | (r) | Liquation |
| (d) | Nickel | (s) | Zone refining |
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Which of the following process is for purification of metals?
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Match the refining methods (Column I) with metals (Column II).
| Column I | Column II | |
|---|---|---|
| (Refining methods) | (Metals) | |
| (I) | Liquation | (a) |
| (II) | Zone Refining | (b) |
| (III) | Mond Process | (c) |
| (IV) | Van Arkel Method | (d) |
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Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
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The method used for the purification of Indium is:
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Which refining process is generally used in the purification of low melting metals?
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Van Arkel method of refining is used for
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Zone refining is used for the purification of
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Which one in the following statements is "not correct" about refining of ores?
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The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is
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The Mond process is used for the:
