EASY
Earn 100

Explain the term Gangue?
Important Questions on General Principles and Processes of Isolation of Elements
MEDIUM
The correct statement is:

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

MEDIUM
The correct statement is:

HARD
Which among the following statement(s) is (are) true for the extraction of aluminium from bauxite?

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

MEDIUM
What is the role of silica in the metallurgy of copper?

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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).

HARD
Explain the purification of sulphide ore by froth floatation method.

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

MEDIUM
Name the process by which impure ore of aluminium gets purified by using concentrated solution of an alkali.

EASY
The ore which is concentrated by leaching

MEDIUM
The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is

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

EASY
Calamine, malachite, magnetite and cryolite, respectively are:

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

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

EASY
Sulphide ores are concentrated by froth floatation process only. Why?

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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:

EASY
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 |

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