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प्रश्न
Identify the process given in following passage and draw neat labelled diagram showing the process.
Electrolysis of molten mixture of alumina (melting point > 20000C) is done in a steel tank. The tank has a graphite lining on the inner side. This lining does the work of a cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and fluorspar (CaF2) are added in the mixture to lower its melting point upto 10000C.
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उत्तर
Electrolytic reduction of Alumina :
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संबंधित प्रश्न
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- What will be the action of C on litmus solution? Why?
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The following questions relate to the extraction of aluminium by electrolysis.
Explain why it is necessary to renew the anode periodically.
Complete the incomplete statement with missing word:
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(c) If X is a reactive metal, then ______ will be evolved, when X reacts with dilute sulphuric acid.
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Metals form non-polar covalent compounds
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Right or wrong sentence?
In the electrolytic dissipation method of alumina, the lining of graphite acts as an anode.
Observe the figure and answer the following.
- Write the name of the method.
- What is used as anode and cathode in this method?
- Write the molecular formula and use of cryolite.
- Write anode reaction.
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- Roasting of copper (I) sulphide
- Reduction of copper (I) oxide with copper (I) sulphide.
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