CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320988
Heating of ore in the presence of air to remove sulphur impurities is called
1 calcination
2 roasting
3 smelting
4 None of these
Explanation:
Roasting is the process of heating the ore in excess supply of air below its melting point. This process is employed when oxidation of ore is required. During roasting moisture is drawn away.This process in mainly employed for sulphide ore.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320989
Amongst the following, how many ores are roasted to convert them into their corresponding metal oxides, alumina, zinc blende, iron pyrites, copper pyrites, galena.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320990
Consider the following statements Roasting is carried out to A. Convert sulphide into oxide and sulphate. B. Remove water of hydration. C. Melt the ore. D. Remove arsenic and sulphur impurities. Mark the correct option.
1 A, B and C are correct
2 A and D are correct
3 A, B and D are correct
4 B,C and D are correct
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320991
Sulphur can be removed from ores by
1 Roasting
2 Leaching
3 Smelting
4 Refining
Explanation:
Roasting: Ore is heated in the presence of air, sulphur present in the ore get oxidise into \(\mathrm{\mathrm{SO}_{2}(\mathrm{~g})}\). \(\rm{\mathrm{S}+\mathrm{O}_{2} \longrightarrow \mathrm{SO}_{2} \uparrow}\)
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320988
Heating of ore in the presence of air to remove sulphur impurities is called
1 calcination
2 roasting
3 smelting
4 None of these
Explanation:
Roasting is the process of heating the ore in excess supply of air below its melting point. This process is employed when oxidation of ore is required. During roasting moisture is drawn away.This process in mainly employed for sulphide ore.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320989
Amongst the following, how many ores are roasted to convert them into their corresponding metal oxides, alumina, zinc blende, iron pyrites, copper pyrites, galena.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320990
Consider the following statements Roasting is carried out to A. Convert sulphide into oxide and sulphate. B. Remove water of hydration. C. Melt the ore. D. Remove arsenic and sulphur impurities. Mark the correct option.
1 A, B and C are correct
2 A and D are correct
3 A, B and D are correct
4 B,C and D are correct
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320991
Sulphur can be removed from ores by
1 Roasting
2 Leaching
3 Smelting
4 Refining
Explanation:
Roasting: Ore is heated in the presence of air, sulphur present in the ore get oxidise into \(\mathrm{\mathrm{SO}_{2}(\mathrm{~g})}\). \(\rm{\mathrm{S}+\mathrm{O}_{2} \longrightarrow \mathrm{SO}_{2} \uparrow}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320988
Heating of ore in the presence of air to remove sulphur impurities is called
1 calcination
2 roasting
3 smelting
4 None of these
Explanation:
Roasting is the process of heating the ore in excess supply of air below its melting point. This process is employed when oxidation of ore is required. During roasting moisture is drawn away.This process in mainly employed for sulphide ore.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320989
Amongst the following, how many ores are roasted to convert them into their corresponding metal oxides, alumina, zinc blende, iron pyrites, copper pyrites, galena.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320990
Consider the following statements Roasting is carried out to A. Convert sulphide into oxide and sulphate. B. Remove water of hydration. C. Melt the ore. D. Remove arsenic and sulphur impurities. Mark the correct option.
1 A, B and C are correct
2 A and D are correct
3 A, B and D are correct
4 B,C and D are correct
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320991
Sulphur can be removed from ores by
1 Roasting
2 Leaching
3 Smelting
4 Refining
Explanation:
Roasting: Ore is heated in the presence of air, sulphur present in the ore get oxidise into \(\mathrm{\mathrm{SO}_{2}(\mathrm{~g})}\). \(\rm{\mathrm{S}+\mathrm{O}_{2} \longrightarrow \mathrm{SO}_{2} \uparrow}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320988
Heating of ore in the presence of air to remove sulphur impurities is called
1 calcination
2 roasting
3 smelting
4 None of these
Explanation:
Roasting is the process of heating the ore in excess supply of air below its melting point. This process is employed when oxidation of ore is required. During roasting moisture is drawn away.This process in mainly employed for sulphide ore.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320989
Amongst the following, how many ores are roasted to convert them into their corresponding metal oxides, alumina, zinc blende, iron pyrites, copper pyrites, galena.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320990
Consider the following statements Roasting is carried out to A. Convert sulphide into oxide and sulphate. B. Remove water of hydration. C. Melt the ore. D. Remove arsenic and sulphur impurities. Mark the correct option.
1 A, B and C are correct
2 A and D are correct
3 A, B and D are correct
4 B,C and D are correct
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
320991
Sulphur can be removed from ores by
1 Roasting
2 Leaching
3 Smelting
4 Refining
Explanation:
Roasting: Ore is heated in the presence of air, sulphur present in the ore get oxidise into \(\mathrm{\mathrm{SO}_{2}(\mathrm{~g})}\). \(\rm{\mathrm{S}+\mathrm{O}_{2} \longrightarrow \mathrm{SO}_{2} \uparrow}\)