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Extraction of Copper

Copper, which...

Question

Copper, which is extracted from cuprite, is a/an :

A

sulphide ore

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B

carbonate ore

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C

oxide ore

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D

halide ore

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Solution

The correct option is A oxide ore
Cuprite is an oxide mineral composed of copper(II) oxide ( $C u_{2} O$ ), and is a minor ore of copper. It can yield small gemstones.

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Similar questions

The principle ore from which copper is extracted is copper __.

Q. Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?

Q. Aluminium and copper are extracted from their oxide and sulphide ores respectively. Which of the following is correct ?
I. Copper is extracted by the auto reduction of copper oxide by copper sulphide.
II. Aluminium cannot be obtained by chemical reduction due to its strong affinity for oxygen.
III. In electrometallurgy of

A l

, graphite is used as cathode to avoid reoxidation of

A l

A l_{2} O_{3}

by preventing formation of

O_{2}

.
IV. Sulphide ores of copper are difficult to be reduced than the oxide ores.

Given below is the steps for extraction of Copper from its ore. Write the reactions involved.

(a) Roasting Copper (I) Sulphide.

(b) Reduction of Copper (I) oxide with Copper (I) sulphide

Q. How is copper extracted from low grade copper ores?

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