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Metallurgy

Concentrated ...

Question

Concentrated metal ores are converted to their oxides for extracting metal from ore.

A

True

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B

False

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Solution

The correct option is A
True

Oxides are easier to reduce than sulphides. Therefore concentrated ore is converted to its oxide for the extraction of metal via reduction.

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Q. Assertion :Extraction of metals from their ores by chemical methods requires the use of reducing agent. Reason: Reducing agent helps to convert the metal oxide from its ore to the metal.

Q. Give reason for the following:
Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Q. Sequence the following steps involved generally in the extraction of a metal in pure form from its ore.
(a) The metal obtained from its oxide require further purification for end use.
(b) The ore should be converted to its oxide form.
(c) The ore is beneficial to us if it is handpicked then metal crushed and ground, and later subjected to pulverization as per the requirement
(d) The ore in the form of oxide is required to be reduced.
(e) Dressed ore is required for it to be concentrated.

(a) Name the methods by which concentrated ore is converted to metallic oxide.

(b) State three objectives achieved during the roasting of ores.

Q. Which of the following is used in the extraction of metal from their oxide ores?

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