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Conversion of Ore to Metal Oxide – Calcination and Roasting

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320983 Find the number of reaction from the given reactions which can show calcination process:
i. \({\mathrm{\mathrm{CaCO}_{3} \cdot \mathrm{MgCO}_{3} \xrightarrow{\Delta} \mathrm{CaO}+\mathrm{MgO}+\mathrm{CO}_{2}}}\)
ii. \({\mathrm{\mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \xrightarrow{\Delta} 2 \mathrm{CuO}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}}}\)
iii. \({\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O}}}\)
iv. \({\mathrm{2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \xrightarrow{\Delta} 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}}}\)

1 1

2 2

3 3

4 4

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320984 When limestone is heated strongly, it gives off \(\mathrm{\mathrm{CO}_{2}}\). In metallurgy this process is known as

1 Calcination

2 Roasting

3 Smelting

4 Ore dressing

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320985 Which one of the following reactions is an example for calcination process?

1 \(\mathrm{2 \mathrm{Ag}+2 \mathrm{HCl}+(\mathrm{O}) \rightarrow 2 \mathrm{AgCl}+\mathrm{H}_{2} \mathrm{O}}\)

2 \(\mathrm{2 \mathrm{Zn}+\mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}}\)

3 \(\mathrm{2 \mathrm{ZnS}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_{2}}\)

4 \(\mathrm{\mathrm{MgCO}_{3} \rightarrow \mathrm{MgO}+\mathrm{CO}_{2}}\)

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320986 Roasting or calcination is not an essential step to extract metal from its ore is

1 Chalcocite

2 Galena

3 Argentite

4 Cerussite

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320987 Calcination is the process of heating the ore:

1 In inert gas

2 In the presence of air

3 In the absence of air

4 In the presence of \(\mathrm{\mathrm{CaO}}\) and \(\mathrm{\mathrm{MgO}}\)

NEET DIGITAL LIBRARY

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320983 Find the number of reaction from the given reactions which can show calcination process:
i. \({\mathrm{\mathrm{CaCO}_{3} \cdot \mathrm{MgCO}_{3} \xrightarrow{\Delta} \mathrm{CaO}+\mathrm{MgO}+\mathrm{CO}_{2}}}\)
ii. \({\mathrm{\mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \xrightarrow{\Delta} 2 \mathrm{CuO}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}}}\)
iii. \({\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O}}}\)
iv. \({\mathrm{2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \xrightarrow{\Delta} 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}}}\)

1 1

2 2

3 3

4 4

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320984 When limestone is heated strongly, it gives off \(\mathrm{\mathrm{CO}_{2}}\). In metallurgy this process is known as

1 Calcination

2 Roasting

3 Smelting

4 Ore dressing

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320985 Which one of the following reactions is an example for calcination process?

1 \(\mathrm{2 \mathrm{Ag}+2 \mathrm{HCl}+(\mathrm{O}) \rightarrow 2 \mathrm{AgCl}+\mathrm{H}_{2} \mathrm{O}}\)

2 \(\mathrm{2 \mathrm{Zn}+\mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}}\)

3 \(\mathrm{2 \mathrm{ZnS}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_{2}}\)

4 \(\mathrm{\mathrm{MgCO}_{3} \rightarrow \mathrm{MgO}+\mathrm{CO}_{2}}\)

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320986 Roasting or calcination is not an essential step to extract metal from its ore is

1 Chalcocite

2 Galena

3 Argentite

4 Cerussite

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320987 Calcination is the process of heating the ore:

1 In inert gas

2 In the presence of air

3 In the absence of air

4 In the presence of \(\mathrm{\mathrm{CaO}}\) and \(\mathrm{\mathrm{MgO}}\)

Join With Us for More Updates

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320983 Find the number of reaction from the given reactions which can show calcination process:
i. \({\mathrm{\mathrm{CaCO}_{3} \cdot \mathrm{MgCO}_{3} \xrightarrow{\Delta} \mathrm{CaO}+\mathrm{MgO}+\mathrm{CO}_{2}}}\)
ii. \({\mathrm{\mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \xrightarrow{\Delta} 2 \mathrm{CuO}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}}}\)
iii. \({\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O}}}\)
iv. \({\mathrm{2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \xrightarrow{\Delta} 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}}}\)

1 1

2 2

3 3

4 4

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320984 When limestone is heated strongly, it gives off \(\mathrm{\mathrm{CO}_{2}}\). In metallurgy this process is known as

1 Calcination

2 Roasting

3 Smelting

4 Ore dressing

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320985 Which one of the following reactions is an example for calcination process?

1 \(\mathrm{2 \mathrm{Ag}+2 \mathrm{HCl}+(\mathrm{O}) \rightarrow 2 \mathrm{AgCl}+\mathrm{H}_{2} \mathrm{O}}\)

2 \(\mathrm{2 \mathrm{Zn}+\mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}}\)

3 \(\mathrm{2 \mathrm{ZnS}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_{2}}\)

4 \(\mathrm{\mathrm{MgCO}_{3} \rightarrow \mathrm{MgO}+\mathrm{CO}_{2}}\)

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320986 Roasting or calcination is not an essential step to extract metal from its ore is

1 Chalcocite

2 Galena

3 Argentite

4 Cerussite

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320987 Calcination is the process of heating the ore:

1 In inert gas

2 In the presence of air

3 In the absence of air

4 In the presence of \(\mathrm{\mathrm{CaO}}\) and \(\mathrm{\mathrm{MgO}}\)

For More Updates join with Us

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320983 Find the number of reaction from the given reactions which can show calcination process:
i. \({\mathrm{\mathrm{CaCO}_{3} \cdot \mathrm{MgCO}_{3} \xrightarrow{\Delta} \mathrm{CaO}+\mathrm{MgO}+\mathrm{CO}_{2}}}\)
ii. \({\mathrm{\mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \xrightarrow{\Delta} 2 \mathrm{CuO}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}}}\)
iii. \({\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O}}}\)
iv. \({\mathrm{2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \xrightarrow{\Delta} 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}}}\)

1 1

2 2

3 3

4 4

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320984 When limestone is heated strongly, it gives off \(\mathrm{\mathrm{CO}_{2}}\). In metallurgy this process is known as

1 Calcination

2 Roasting

3 Smelting

4 Ore dressing

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320985 Which one of the following reactions is an example for calcination process?

1 \(\mathrm{2 \mathrm{Ag}+2 \mathrm{HCl}+(\mathrm{O}) \rightarrow 2 \mathrm{AgCl}+\mathrm{H}_{2} \mathrm{O}}\)

2 \(\mathrm{2 \mathrm{Zn}+\mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}}\)

3 \(\mathrm{2 \mathrm{ZnS}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_{2}}\)

4 \(\mathrm{\mathrm{MgCO}_{3} \rightarrow \mathrm{MgO}+\mathrm{CO}_{2}}\)

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320986 Roasting or calcination is not an essential step to extract metal from its ore is

1 Chalcocite

2 Galena

3 Argentite

4 Cerussite

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320987 Calcination is the process of heating the ore:

1 In inert gas

2 In the presence of air

3 In the absence of air

4 In the presence of \(\mathrm{\mathrm{CaO}}\) and \(\mathrm{\mathrm{MgO}}\)

NEET DIGITAL LIBRARY

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320983 Find the number of reaction from the given reactions which can show calcination process:
i. \({\mathrm{\mathrm{CaCO}_{3} \cdot \mathrm{MgCO}_{3} \xrightarrow{\Delta} \mathrm{CaO}+\mathrm{MgO}+\mathrm{CO}_{2}}}\)
ii. \({\mathrm{\mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \xrightarrow{\Delta} 2 \mathrm{CuO}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}}}\)
iii. \({\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O}}}\)
iv. \({\mathrm{2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \xrightarrow{\Delta} 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}}}\)

1 1

2 2

3 3

4 4

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320984 When limestone is heated strongly, it gives off \(\mathrm{\mathrm{CO}_{2}}\). In metallurgy this process is known as

1 Calcination

2 Roasting

3 Smelting

4 Ore dressing

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320985 Which one of the following reactions is an example for calcination process?

1 \(\mathrm{2 \mathrm{Ag}+2 \mathrm{HCl}+(\mathrm{O}) \rightarrow 2 \mathrm{AgCl}+\mathrm{H}_{2} \mathrm{O}}\)

2 \(\mathrm{2 \mathrm{Zn}+\mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}}\)

3 \(\mathrm{2 \mathrm{ZnS}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_{2}}\)

4 \(\mathrm{\mathrm{MgCO}_{3} \rightarrow \mathrm{MgO}+\mathrm{CO}_{2}}\)

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320986 Roasting or calcination is not an essential step to extract metal from its ore is

1 Chalcocite

2 Galena

3 Argentite

4 Cerussite

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

320987 Calcination is the process of heating the ore:

1 In inert gas

2 In the presence of air

3 In the absence of air

4 In the presence of \(\mathrm{\mathrm{CaO}}\) and \(\mathrm{\mathrm{MgO}}\)

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