GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25864
A process used for the concentration of ore is
1 Froth floatation
2 Roasting
3 Electrolysis
4 Bessemerization
Explanation:
Froth Floatation is used for concentration of ores. Roasting is used for oxidation. Electrolysis is used for refining. Bessemerization is used for reduction and purification.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25865
Magnetic separation is used for increasing concentration of the following
1 Horn silver
2 Calcite
3 Haematite
4 Magnesite
Explanation:
(c)Haematite\((F{e_2}{O_3})\) Iron ores are concentrated by this method
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25866
The substance added in water in the froth floatation process is
1 Soap powder
2 Pine oil
3 Coconut oil
4 None of the above
Explanation:
(b)Pine oil is foaming agent. Now another substance collector such as potassium ethyl xanthate or amyl xanthate are added.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25867
For which ore of the metal, froth floatation method is used for concentration
1 Horn silver
2 Bauxite
3 Cinnabar
4 Haematite
Explanation:
(c)Cinnabar \((HgS)\) the ore of mercury is concentrated by froth floatation process.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25864
A process used for the concentration of ore is
1 Froth floatation
2 Roasting
3 Electrolysis
4 Bessemerization
Explanation:
Froth Floatation is used for concentration of ores. Roasting is used for oxidation. Electrolysis is used for refining. Bessemerization is used for reduction and purification.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25865
Magnetic separation is used for increasing concentration of the following
1 Horn silver
2 Calcite
3 Haematite
4 Magnesite
Explanation:
(c)Haematite\((F{e_2}{O_3})\) Iron ores are concentrated by this method
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25866
The substance added in water in the froth floatation process is
1 Soap powder
2 Pine oil
3 Coconut oil
4 None of the above
Explanation:
(b)Pine oil is foaming agent. Now another substance collector such as potassium ethyl xanthate or amyl xanthate are added.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25867
For which ore of the metal, froth floatation method is used for concentration
1 Horn silver
2 Bauxite
3 Cinnabar
4 Haematite
Explanation:
(c)Cinnabar \((HgS)\) the ore of mercury is concentrated by froth floatation process.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25864
A process used for the concentration of ore is
1 Froth floatation
2 Roasting
3 Electrolysis
4 Bessemerization
Explanation:
Froth Floatation is used for concentration of ores. Roasting is used for oxidation. Electrolysis is used for refining. Bessemerization is used for reduction and purification.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25865
Magnetic separation is used for increasing concentration of the following
1 Horn silver
2 Calcite
3 Haematite
4 Magnesite
Explanation:
(c)Haematite\((F{e_2}{O_3})\) Iron ores are concentrated by this method
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25866
The substance added in water in the froth floatation process is
1 Soap powder
2 Pine oil
3 Coconut oil
4 None of the above
Explanation:
(b)Pine oil is foaming agent. Now another substance collector such as potassium ethyl xanthate or amyl xanthate are added.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25867
For which ore of the metal, froth floatation method is used for concentration
1 Horn silver
2 Bauxite
3 Cinnabar
4 Haematite
Explanation:
(c)Cinnabar \((HgS)\) the ore of mercury is concentrated by froth floatation process.
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GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25864
A process used for the concentration of ore is
1 Froth floatation
2 Roasting
3 Electrolysis
4 Bessemerization
Explanation:
Froth Floatation is used for concentration of ores. Roasting is used for oxidation. Electrolysis is used for refining. Bessemerization is used for reduction and purification.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25865
Magnetic separation is used for increasing concentration of the following
1 Horn silver
2 Calcite
3 Haematite
4 Magnesite
Explanation:
(c)Haematite\((F{e_2}{O_3})\) Iron ores are concentrated by this method
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25866
The substance added in water in the froth floatation process is
1 Soap powder
2 Pine oil
3 Coconut oil
4 None of the above
Explanation:
(b)Pine oil is foaming agent. Now another substance collector such as potassium ethyl xanthate or amyl xanthate are added.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25867
For which ore of the metal, froth floatation method is used for concentration
1 Horn silver
2 Bauxite
3 Cinnabar
4 Haematite
Explanation:
(c)Cinnabar \((HgS)\) the ore of mercury is concentrated by froth floatation process.
