EASY
Earn 100

Froth floatation process is used for the concentration of

50% studentsanswered this correctly

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?
EASY

Al2O3 was leached with alkali to get X. The solution of X on passing of gas Y, forms Z.

X,Y and Z respectively are

EASY
Which one of the following ores is best concentrated by froth flotation method?
EASY
Sodium Cyanide is added as a depressant in the froth flotation process when the ore contains a mixture of ZnS and PbS. This is because
EASY
The idea of froth flotation method came from a person X and this method is related to the process Y  of ores. X and Y,  respectivity, are:
EASY
Which of the following ore is concentrated using group 1 cyanide salt?
EASY
Match items of column-I with the items of column-II and assign the correct code:
 
  Column I   Column II
(a) Cyanide process (i) Ultrapure Ge
(b) Froth floatation process (ii) Dressing of ZnS
(c) Electrolytic reduction (iii) Extraction of Al
(d) Zone refining (iv) Extraction of Au
    (v) Purification of Ni
MEDIUM
In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :
MEDIUM
Which soluble complex is formed in the leaching process of Gold?
MEDIUM
Which of the reaction is suitable for concentrating ore by leaching process?
EASY
The cyanide process of gold extraction involves leaching out gold from its ore with CN- in the presence of Q in water to form R . Subsequently, R is treated with T to obtain Au and Z . Choose the correct option(s).
EASY
Extraction of gold and silver involves leaching with CN- ion. Silver or gold is later recovered by: