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Electrolytic Refining

There were tw...

Question

There were two metals, Metal A and B. Both were extracted by means of electrolytic reduction of their molten salts. Metal A and B are:

A

Manganese and magnesium

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B

Magnesium and aluminium

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C

Aluminium and manganese

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D

None of these

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Solution

The correct option is B
Magnesium and aluminium

The oxides of highly electropositive metals like Na, K, Mg, Al cannot be reduced by using coke. Hence for them electrolytic reduction is required.

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Similar questions

Q. Assertion :Magnesium is extracted by electrolytic reduction.
Reason: All metals are extracted by electrolytic reduction.

Q. Metals like sodium, potassium, calcium and magnesium are extracted by electrolysis of their chlorides in molten state. These metals are not extracted by reduction of their oxides with carbon because:
a) Reduction with carbon is very expensive
b) Carbon readily makes alloys with these metals
c) Carbon has less affinity for oxygen than these metals
d) Carbon is a weaker reducing agent than these metals

Q. Which of the following metals are extracted by electrolytic reduction?

Q. Out of Al, Na, Cu and Ag; the following metals can be obtained by the electrolytic reduction of aqueous solution of their salts _____________.

Q. (a) Roasting and calcination are the two processes to reduce the metal oxides to the respective metals.
(b) Magnesium is extracted from its ore by electrolytic reduction process.
(c) Cryolite is used in metallurgy of aluminium in order to increase the fusibility and conductivity
(d) I Hall's process bauxite is leached with the help of

{N a}_{2} {C O}_{3}

.
Which of the following options regarding the above statements is correct?

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