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Application of Electrolysis

Most electrop...

Question

Most electropositive metals are obtained from their ores by:

A

autoreduction.

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B

smelting with carbon.

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C

electrolysis of fused salts.

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D

thermal decomposition.

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Solution

The correct option is C electrolysis of fused salts.
High electropositive metals such as alkali metals, alkaline earth metals, etc. are extracted by electrolysis of their ionic salts in fused state.

Hence,option C is correct.

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Similar questions

Q. The most electropositive metals are isolated from their ores by ___________.

Reduction to free metal: some of the methods commonly used to get free metal from the concentrates ore are below.

Smelting: The process of extracting a metal in the state of fusions is called smelting. In this process, the ore is mixed with carbon and heated in a suitable furnace

Electrolytic reduction process: This process is used in the extraction of the alkali and alkaline earth metals, zinc and aluminium.

Self-reduction process: The sulphide ores of less electropositive metals like Hg, Pb, Cu etc., are heated in the air so as to convert part of the ore into oxide or sulphate which then reacts with the remaining sulphide ore to give the metal.

The metal extracted by electrolysis of its fused salt is :

Q. Metals like copper, mercury and lead are obtained from their oxide ores by

Q. The metals extracted from their fused salts are :

Q. Metals extracted by electrolysis of their fused salts are :

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