MEDIUM
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Which of the following minerals is an ore of aluminum?
(a)Bauxite
(b)Hematite
(c)Magnetite
(d)Galena

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Important Questions on General Principles and Processes of Isolation of Elements (Metallurgy)
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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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was leached with alkali to get The solution of on passing of gas forms
and respectively are

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The role of in the separation of and by froth floatation method is

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The correct statement is:

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Sulphide ores are generally concentrated by

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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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Which of the following reactions is an example of calcination process?

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The correct statement is:

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Calamine, malachite, magnetite and cryolite, respectively are:

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Bauxite, an ore of aluminium, is purified by which process?

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

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The pair that does not require calcination is

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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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In the isolation of metals, calcination process usually results in:

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The process that involves the removal of sulphur from the ores is :

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Sulphide ore on roasting gives a gas . reacts with in the presence of activated charcoal to give . is :

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The ore which is concentrated by leaching

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

