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Earn 100

Froth floatation process is used for the concentration of
(a)Oxide ores
(b)Sulphide ores
(c)Chloride ores
(d)Amalgams

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Important Questions on General Principles and Processes of Isolation of Elements
HARD
Which among the following statement(s) is (are) true for the extraction of aluminium from bauxite?

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The correct statement is:

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Calamine, malachite, magnetite and cryolite, respectively are:

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was leached with alkali to get The solution of on passing of gas forms
and respectively are

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Which one of the following ores is best concentrated by froth flotation method?

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Sodium Cyanide is added as a depressant in the froth flotation process when the ore contains a mixture of and This is because

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The correct statement is:

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The role of depressants in 'Froth Floation method' is to

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The idea of froth flotation method came from a person and this method is related to the process of ores. respectivity, are:

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With reference to aqua regia, choose the correct option(s).

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Which of the following ore is concentrated using group cyanide salt?

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Match items of column-I with the items of column-II and assign the correct code:
Column I | Column II | ||
Cyanide process | Ultrapure | ||
Froth floatation process | Dressing of | ||
Electrolytic reduction | Extraction of | ||
Zone refining | Extraction of | ||
Purification of |

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In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with is :

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The ore which is concentrated by leaching

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Which soluble complex is formed in the leaching process of Gold?

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In metallurgy the term "gangue" is used for

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Which of the reaction is suitable for concentrating ore by leaching process?

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The cyanide process of gold extraction involves leaching out gold from its ore with in the presence of in water to form . Subsequently, is treated with to obtain and . Choose the correct option(s).

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Extraction of gold and silver involves leaching with ion. Silver or gold is later recovered by:

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Give the name and chemical formula of one ore of copper.

