Reduction to the Metal
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321114 In Goldschmidt's aluminothermic process,thermite mixture contains____ parts of Fe2O3 and one part of aluminium.

1 4
2 1
3 3
4 0
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321115 Which metal can be obtained from electrolysis?

1 Fe
2 Cr
3 Al
4 Au
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321116 Which of the following metals is extracted by the electrometallurgical method?

1 Cu
2 Fe
3 Na
4 Ag
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321117 The fluorspar (CaF2) is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). The role of fluorspar is/are
I. To decrease the rate of oxidation of carbon at anode.
II. To act as a catalyst
III. To lower the temperature of the melt.
IV. To make the fused mixture very conducting
Choose the correct statement(s).

1 I and II
2 II and III
3 I and IV
4 III and IV
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321114 In Goldschmidt's aluminothermic process,thermite mixture contains____ parts of Fe2O3 and one part of aluminium.

1 4
2 1
3 3
4 0
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321115 Which metal can be obtained from electrolysis?

1 Fe
2 Cr
3 Al
4 Au
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321116 Which of the following metals is extracted by the electrometallurgical method?

1 Cu
2 Fe
3 Na
4 Ag
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321117 The fluorspar (CaF2) is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). The role of fluorspar is/are
I. To decrease the rate of oxidation of carbon at anode.
II. To act as a catalyst
III. To lower the temperature of the melt.
IV. To make the fused mixture very conducting
Choose the correct statement(s).

1 I and II
2 II and III
3 I and IV
4 III and IV
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321118 Which of the following gives metal by electrolytic reduction conveniently and profitably?

1 PbO
2 Fe2O3
3 Cr2O3
4 Al2O3
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321114 In Goldschmidt's aluminothermic process,thermite mixture contains____ parts of Fe2O3 and one part of aluminium.

1 4
2 1
3 3
4 0
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321115 Which metal can be obtained from electrolysis?

1 Fe
2 Cr
3 Al
4 Au
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321116 Which of the following metals is extracted by the electrometallurgical method?

1 Cu
2 Fe
3 Na
4 Ag
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321117 The fluorspar (CaF2) is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). The role of fluorspar is/are
I. To decrease the rate of oxidation of carbon at anode.
II. To act as a catalyst
III. To lower the temperature of the melt.
IV. To make the fused mixture very conducting
Choose the correct statement(s).

1 I and II
2 II and III
3 I and IV
4 III and IV
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321118 Which of the following gives metal by electrolytic reduction conveniently and profitably?

1 PbO
2 Fe2O3
3 Cr2O3
4 Al2O3
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321114 In Goldschmidt's aluminothermic process,thermite mixture contains____ parts of Fe2O3 and one part of aluminium.

1 4
2 1
3 3
4 0
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321115 Which metal can be obtained from electrolysis?

1 Fe
2 Cr
3 Al
4 Au
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321116 Which of the following metals is extracted by the electrometallurgical method?

1 Cu
2 Fe
3 Na
4 Ag
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321117 The fluorspar (CaF2) is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). The role of fluorspar is/are
I. To decrease the rate of oxidation of carbon at anode.
II. To act as a catalyst
III. To lower the temperature of the melt.
IV. To make the fused mixture very conducting
Choose the correct statement(s).

1 I and II
2 II and III
3 I and IV
4 III and IV
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321118 Which of the following gives metal by electrolytic reduction conveniently and profitably?

1 PbO
2 Fe2O3
3 Cr2O3
4 Al2O3
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321114 In Goldschmidt's aluminothermic process,thermite mixture contains____ parts of Fe2O3 and one part of aluminium.

1 4
2 1
3 3
4 0
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321115 Which metal can be obtained from electrolysis?

1 Fe
2 Cr
3 Al
4 Au
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321116 Which of the following metals is extracted by the electrometallurgical method?

1 Cu
2 Fe
3 Na
4 Ag
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321117 The fluorspar (CaF2) is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). The role of fluorspar is/are
I. To decrease the rate of oxidation of carbon at anode.
II. To act as a catalyst
III. To lower the temperature of the melt.
IV. To make the fused mixture very conducting
Choose the correct statement(s).

1 I and II
2 II and III
3 I and IV
4 III and IV
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321118 Which of the following gives metal by electrolytic reduction conveniently and profitably?

1 PbO
2 Fe2O3
3 Cr2O3
4 Al2O3