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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321095 Cerussite is an ore of

1

Na

2

Cu

3

Pb

4

Fe

Explanation:

Cerussite is an ore of lead $(P b)$ . Its chemical formula is $P b C O_{3} .$

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321096 Argentite is a mineral of

1 Copper

2 Silver

3 Platinum

4 Aluminium

Explanation:

The chemical formula of argentite or silver glance is $A g_{2} S$
Hence, argentite is a mineral of silver.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321097 Ore of which of the following element is a metalloid?

1

As

2

Na

3

Au

4

Fe

Explanation:

$As \to$ metalloid; $Na, Au, Fe \to$ Metals.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321098 How many of the following are oxide minerals of iron?
Haematite, iron pyrites, siderite, magnetite, limonite

1 2

2 4

3 3

4 1

Explanation:

Haematite $({Fe}_{2} O_{3})$ , magnetite $({Fe}_{3} O_{4})$ and limonite $(2 {Fe}_{2} O_{3} .3 H_{2} O)$ are oxide minerals. Iron pyrites $({FeS}_{2})$ is a sulphide mineral and siderite $({FeCO}_{3})$ is carbonate mineral.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321095 Cerussite is an ore of

1

Na

2

Cu

3

Pb

4

Fe

Explanation:

Cerussite is an ore of lead $(P b)$ . Its chemical formula is $P b C O_{3} .$

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321096 Argentite is a mineral of

1 Copper

2 Silver

3 Platinum

4 Aluminium

Explanation:

The chemical formula of argentite or silver glance is $A g_{2} S$
Hence, argentite is a mineral of silver.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321097 Ore of which of the following element is a metalloid?

1

As

2

Na

3

Au

4

Fe

Explanation:

$As \to$ metalloid; $Na, Au, Fe \to$ Metals.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321098 How many of the following are oxide minerals of iron?
Haematite, iron pyrites, siderite, magnetite, limonite

1 2

2 4

3 3

4 1

Explanation:

Haematite $({Fe}_{2} O_{3})$ , magnetite $({Fe}_{3} O_{4})$ and limonite $(2 {Fe}_{2} O_{3} .3 H_{2} O)$ are oxide minerals. Iron pyrites $({FeS}_{2})$ is a sulphide mineral and siderite $({FeCO}_{3})$ is carbonate mineral.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321095 Cerussite is an ore of

1

Na

2

Cu

3

Pb

4

Fe

Explanation:

Cerussite is an ore of lead $(P b)$ . Its chemical formula is $P b C O_{3} .$

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321096 Argentite is a mineral of

1 Copper

2 Silver

3 Platinum

4 Aluminium

Explanation:

The chemical formula of argentite or silver glance is $A g_{2} S$
Hence, argentite is a mineral of silver.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321097 Ore of which of the following element is a metalloid?

1

As

2

Na

3

Au

4

Fe

Explanation:

$As \to$ metalloid; $Na, Au, Fe \to$ Metals.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321098 How many of the following are oxide minerals of iron?
Haematite, iron pyrites, siderite, magnetite, limonite

1 2

2 4

3 3

4 1

Explanation:

Haematite $({Fe}_{2} O_{3})$ , magnetite $({Fe}_{3} O_{4})$ and limonite $(2 {Fe}_{2} O_{3} .3 H_{2} O)$ are oxide minerals. Iron pyrites $({FeS}_{2})$ is a sulphide mineral and siderite $({FeCO}_{3})$ is carbonate mineral.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321095 Cerussite is an ore of

1

Na

2

Cu

3

Pb

4

Fe

Explanation:

Cerussite is an ore of lead $(P b)$ . Its chemical formula is $P b C O_{3} .$

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321096 Argentite is a mineral of

1 Copper

2 Silver

3 Platinum

4 Aluminium

Explanation:

The chemical formula of argentite or silver glance is $A g_{2} S$
Hence, argentite is a mineral of silver.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321097 Ore of which of the following element is a metalloid?

1

As

2

Na

3

Au

4

Fe

Explanation:

$As \to$ metalloid; $Na, Au, Fe \to$ Metals.

CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321098 How many of the following are oxide minerals of iron?
Haematite, iron pyrites, siderite, magnetite, limonite

1 2

2 4

3 3

4 1

Explanation:

Haematite $({Fe}_{2} O_{3})$ , magnetite $({Fe}_{3} O_{4})$ and limonite $(2 {Fe}_{2} O_{3} .3 H_{2} O)$ are oxide minerals. Iron pyrites $({FeS}_{2})$ is a sulphide mineral and siderite $({FeCO}_{3})$ is carbonate mineral.

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