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प्रश्न
Match the items of Column I with the items of Column II and assign the correct code:
| Column I | Column II |
| (A) Coloured bands | (1) Zone refining |
| (B) Impure metal to volatile complex | (2) Fractional distillation |
| (C) Purification of Ge and Si | (3) Mond Process |
| (D) Purification of mercury | (4) Chromatography |
| (5) Liquation |
पर्याय
A - (1), B - (2), C - (4), D - (5)
A - (4), B - (3), C - (1), D - (2)
A - (3), B - (4), C - (2), D - (1)
A - (5), B - (4), C - (3), D - (2)
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उत्तर
A - (4), B - (3), C - (1), D - (2)
Explanation:
| Column I | Column II |
| (A) Coloured bands | (4) Chromatography |
| (B) Impure metal to volatile complex | (3) Mond Process |
| (C) Purification of Ge and Si | (1) Zone refining |
| (D) Purification of mercury | (2) Fractional distillation |
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संबंधित प्रश्न
What is the principle behind the zone refining of metals?
Explain the principle of the method of electrolytic refining of metals. Give one example.
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?
Describe a method for refining nickel.
Describe ‘froth floatation process’ for concentration of sulphide ore.
Write the chemical equations involved in van Arkel method for refining zirconium metal.
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Write down the reaction taking place in blast furnace related to the metallurgy of iron in the temperature rnge 500 K – 800 K. What is the role of limestone in the metallurgy of iron?
What happens when Silver is leached with NaCN in the presence of air?
Zone refining is based on the principle that ______.
In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?
(i) Heating with stream of carbon monoxide.
(ii) Heating with iodine.
(iii) Liquation.
(iv) Distillation.
In the extraction of chlorine from brine:
(i) ∆GΘ for the overall reaction is negative.
(ii) ∆GΘ for the overall reaction is positive.
(iii) EΘ for overall reaction has negative value.
(iv) EΘ for overall reaction has positive value.
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
Which method is used for refining Zr and Ti? Explain with equation.
How are metals used as semiconductors refined? What is the principle of the method used?
Assertion: Nickel can be purified by Mond process.
Reason: \[\ce{Ni(CO)4}\] is a volatile compound which decomposes at 460 K to give pure Ni.
Assertion: Zirconium can be purificed by Van Arkel method.
Reason: ZrI4 is volatile and decomposes at 1800 K.
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
Electrolytic reduction method is used for the extraction of ______.
Describe a method for refining nickel.
