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Corrosion

Name the foll...

Question

Name the following
1. The process in which a metal oxides react with its metal sulphide to get native metal

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Solution

Smelting

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Similar questions

Q. Consider the following isolation/purification processes.

(I) Heating impure metal with

I_{2}

150 - 200^{\circ} C

and passing the resulting volatile iodide on hot tungsten filament at

1400^{\circ} C

to get the pure metal.
(II) Heating the sulphide ore in the air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide to get the metal.
(III) Electrolysis of the molten electrolyte containing metal oxide and cryolite or fluorspar to obtain the metal.

The processes used for obtaining aluminium, titanium and lead are respectively :

Q. Assertion :The metal sulphides and carbonates are converted to metal oxides in the process of extraction of metal from them. Reason: Easier to obtain metal from its oxide, as compared from its sulphides and carbonates.

Q. The reaction given below represent the processes of reduction to obtain metals from their respective ores.
Arrange them in the following order.
Sodium, aluminium, zinc, chromium, iron, copper and mercury
(a) Metal oxide

+

\to

+ {S O}_{2}

(b) Metal oxide

+ C O \to

+ {C O}_{2}

(c) Metal oxide

+ C \to

+ C O

(d) Metal oxide

\to

+ O_{2}

(e) Metal oxide

Δ - \to

+ O_{2}

(f) Metal oxide

+

\to

Aluminium oxide

+

metal
(g) Metal chloride

\to

+

Q. Consider the following metallurgical processes :

(I)

Heating impure metal with

C O

and distilling the resulting volatile carbonyl (b.p.

43^{0}

C) and finally decomposition at

150^{0}

200^{0}

C to get the pure metal.

(I I)

Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide.

(I I I)

Electrolysisof the molten electrolyte containing approximately equal amounts of the metal chloride and

N a C l

to obtain the metal.

The processes used for obtaining magnesium, nickel and copper are respectively :

Q. (a) Name two metals which are found in free state in nature.
(b) What chemical process is used for extracting a metal from its oxide ore? Name one metal which is extracted by this method.
(c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.

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