QBManager

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320962 Statement A :
Zinc can be used while copper cannot be used in the recovery of Ag from the complex ${[Ag (CN)_{2}]}^{-}$
Statement B :
Zinc is a powerful reducing agent than copper.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320963 Which of the following reaction is a part of Serpeck's process?

1

{Al}_{2} O_{3} + 2 NaOH \to 2 {NaAlO}_{2} + H_{2} O

2

{Fe}_{2} O_{3} + 2 Al \to 2 Fe + {Al}_{2} O_{3}

3

AlN + 3 H_{2} O \to Al (OH)_{3} + {NH}_{3}

4

{Al}_{2} O_{3} \cdot 2 H_{2} O + 2 {Na}_{2} {CO}_{3} \to 2 {NaAlO}_{2} + {CO}_{2} + 2 H_{2} O

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320964 Extraction of gold and silver involves leaching with ${CN}^{-}$ ion. Silver is later recovered by

1 Distillation

2 Zone refining

3 Displacement with

Zn

4 Liquation

Explanation:

Mac arther forest process/cyanide process
${Ag}_{2} S + 4 NaCN \overset{O_{2}}{⟶} 2 Na [Ag (CN)_{2}] + {Na}_{2} {SO}_{4}$
$2 Na [Ag (CN)_{2}] \overset{Zn}{⟶} {Na}_{2} [Zn (CN)_{4}] + Ag (↓)$
(Soluble complex)
Ag extracted by displacement with $Zn$

NEET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320965 The metal extracted by leaching with cyanide is

1

Cu

2

Al

3

Na

4

Ag

KCET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320962 Statement A :
Zinc can be used while copper cannot be used in the recovery of Ag from the complex ${[Ag (CN)_{2}]}^{-}$
Statement B :
Zinc is a powerful reducing agent than copper.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320963 Which of the following reaction is a part of Serpeck's process?

1

{Al}_{2} O_{3} + 2 NaOH \to 2 {NaAlO}_{2} + H_{2} O

2

{Fe}_{2} O_{3} + 2 Al \to 2 Fe + {Al}_{2} O_{3}

3

AlN + 3 H_{2} O \to Al (OH)_{3} + {NH}_{3}

4

{Al}_{2} O_{3} \cdot 2 H_{2} O + 2 {Na}_{2} {CO}_{3} \to 2 {NaAlO}_{2} + {CO}_{2} + 2 H_{2} O

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320964 Extraction of gold and silver involves leaching with ${CN}^{-}$ ion. Silver is later recovered by

1 Distillation

2 Zone refining

3 Displacement with

Zn

4 Liquation

Explanation:

Mac arther forest process/cyanide process
${Ag}_{2} S + 4 NaCN \overset{O_{2}}{⟶} 2 Na [Ag (CN)_{2}] + {Na}_{2} {SO}_{4}$
$2 Na [Ag (CN)_{2}] \overset{Zn}{⟶} {Na}_{2} [Zn (CN)_{4}] + Ag (↓)$
(Soluble complex)
Ag extracted by displacement with $Zn$

NEET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320965 The metal extracted by leaching with cyanide is

1

Cu

2

Al

3

Na

4

Ag

KCET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320962 Statement A :
Zinc can be used while copper cannot be used in the recovery of Ag from the complex ${[Ag (CN)_{2}]}^{-}$
Statement B :
Zinc is a powerful reducing agent than copper.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320963 Which of the following reaction is a part of Serpeck's process?

1

{Al}_{2} O_{3} + 2 NaOH \to 2 {NaAlO}_{2} + H_{2} O

2

{Fe}_{2} O_{3} + 2 Al \to 2 Fe + {Al}_{2} O_{3}

3

AlN + 3 H_{2} O \to Al (OH)_{3} + {NH}_{3}

4

{Al}_{2} O_{3} \cdot 2 H_{2} O + 2 {Na}_{2} {CO}_{3} \to 2 {NaAlO}_{2} + {CO}_{2} + 2 H_{2} O

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320964 Extraction of gold and silver involves leaching with ${CN}^{-}$ ion. Silver is later recovered by

1 Distillation

2 Zone refining

3 Displacement with

Zn

4 Liquation

Explanation:

Mac arther forest process/cyanide process
${Ag}_{2} S + 4 NaCN \overset{O_{2}}{⟶} 2 Na [Ag (CN)_{2}] + {Na}_{2} {SO}_{4}$
$2 Na [Ag (CN)_{2}] \overset{Zn}{⟶} {Na}_{2} [Zn (CN)_{4}] + Ag (↓)$
(Soluble complex)
Ag extracted by displacement with $Zn$

NEET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320965 The metal extracted by leaching with cyanide is

1

Cu

2

Al

3

Na

4

Ag

KCET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320962 Statement A :
Zinc can be used while copper cannot be used in the recovery of Ag from the complex ${[Ag (CN)_{2}]}^{-}$
Statement B :
Zinc is a powerful reducing agent than copper.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320963 Which of the following reaction is a part of Serpeck's process?

1

{Al}_{2} O_{3} + 2 NaOH \to 2 {NaAlO}_{2} + H_{2} O

2

{Fe}_{2} O_{3} + 2 Al \to 2 Fe + {Al}_{2} O_{3}

3

AlN + 3 H_{2} O \to Al (OH)_{3} + {NH}_{3}

4

{Al}_{2} O_{3} \cdot 2 H_{2} O + 2 {Na}_{2} {CO}_{3} \to 2 {NaAlO}_{2} + {CO}_{2} + 2 H_{2} O

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320964 Extraction of gold and silver involves leaching with ${CN}^{-}$ ion. Silver is later recovered by

1 Distillation

2 Zone refining

3 Displacement with

Zn

4 Liquation

Explanation:

Mac arther forest process/cyanide process
${Ag}_{2} S + 4 NaCN \overset{O_{2}}{⟶} 2 Na [Ag (CN)_{2}] + {Na}_{2} {SO}_{4}$
$2 Na [Ag (CN)_{2}] \overset{Zn}{⟶} {Na}_{2} [Zn (CN)_{4}] + Ag (↓)$
(Soluble complex)
Ag extracted by displacement with $Zn$

NEET - 2017

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320965 The metal extracted by leaching with cyanide is

1

Cu

2

Al

3

Na

4

Ag

KCET - 2017

Question Bank Series

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Question Bank Series

Explanation:

Explanation:

Explanation:

Explanation: