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प्रश्न
Name one metal each occurring as :
A sulphine
उत्तर
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संबंधित प्रश्न
What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.
Name one method for the refining of metals.
How are metals refined by the electrolytic process? Describe the electrolytic refining of copper with the help of a neat labelled diagram.
Name any five metals which are purified by electrolytic refining method.
Draw a neat labelled diagram.
Magnetic separation method.
Draw a neat labelled diagram.
Electrolytic reduction of alumina.
Which of the following process to be carried out to avoid the
formation of greenish layer on brass vessels due to corrosion?
Name one metal each occurring as :
An oxide
Ionic compounds are electrically _______.
The lightest liquid metal is ____________.
\[\ce{Cu2S + 3Cu2O -> 6Cu + SO2}\]
The above process is:
Bauxite is mixed with cryolite so as to
(i) reduce its melting point
(ii) increase its electrical conductivity
(iii) molten cryolite acts as a solvent
(iv) increase its melting point
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
(i) Au
(ii) Cu
(iii) Na
(iv) K
Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
Which one of the following figures correctly describes the process of electrolytic refining?
Identify the terms for the following:
The electrode where reduction takes place.
Answer the following questions with reference to the electrorefining of copper:
Write the reaction taking place at the cathode.
