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प्रश्न
During extraction of metals, electolytic refining is used to obtain pure metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?
उत्तर
- During extraction of silver metal, impure metal will be used as anode and pure metal is used as a cathode for refining of silver metal by this electrolytic refining.
- Silver Sulphate or Silver Nitrate could be used as an electrolyte.
- Pure silver is obtained on the cathode.
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संबंधित प्रश्न
In the extraction of aluminium: Name the process of concentration of bauxite.
An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.
(a) What are A and B?
(b) Identify C and D.
(c) What will be the action of C on litmus solution? Why?
(d) Write formula of the compound formed when element B reacts with an element E having atomic number 5.
Give reasons, why aluminum is used in:
making alloys
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Why is powdered coke sprinkled on top of the electrolyte?
Name the following:
The process of heating a substance very strongly in such a way that it does not combine with oxygen.
Complete the incomplete statement with missing word:
Metals are malleable while non-metals are ______.
Answer the following question :
What is the difference between calcination and roasting.
Write the name.
Metals which are amphoteric in nature.
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.
Give the reaction involved during extraction of zinc from its ore by
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