EASY
Earn 100

In metallurgy the term "gangue" is used for

33.33% studentsanswered this correctly

Important Questions on Transition and Inner Transition Elements

EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Which of the following ore is concentrated using group 1 cyanide salt?
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
The ore which is concentrated by leaching
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron

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
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron

The process of extracting a soluble material from an insoluble solid by dissolving out in a suitable solvent is known as:

MEDIUM
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
The correct statement is:
MEDIUM
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
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
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron

Which method is not used for concentration of ores?

MEDIUM
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
The correct statement is:
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
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
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Sulphide ores are generally concentrated by 
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Extraction of gold and silver involves leaching with CN- ion. Silver or gold is later recovered by:
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Extraction of gold and silver involves leaching the metal with CN- ion. The metal is later recovered by _____.
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Bauxite, an ore of aluminium, is purified by which process?
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Which of the following statement is correct about the role of substances added in the froth flotation process?
HARD
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
The stabilizer used for stabilizing froth is
HARD
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
In the metallurgical extraction of gold, the method used for the concentration of ore is
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Calamine, malachite, magnetite and cryolite, respectively are:
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
Which one of the following ores is best concentrated by froth flotation method?
EASY
Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Extraction of iron
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