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प्रश्न
Draw a neat labelled diagram.
Hydraulic separation method.
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उत्तर
Hydraulic separation method-
संबंधित प्रश्न
Name one method for the refining of metals.
What is meant by refining of a metal? Name the most widely used method for the refining of impure metals obtained by various reduction processes. Describe this method with the help of a labelled diagram by taking the example of any metal.
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.
Explain how the following metals are obtained from their compounds by the reduction process:
(i) Metal M which is in the middle of the reactivity series.
(ii) Metal N which is high up in the reactivity series.
Give one example of each type
Draw a neat labelled diagram.
Froth floatation method.
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 :
A sulphine
Name one metal each occurring as :
An oxide
Ionic compounds are electrically _______.
Electrolysis is used to obtain pure metal from impure metal.
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
An electrolytic cell consists of
- positively charged cathode
- negatively charged anode
- positively charged anode
- negatively charged cathode
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?
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.
