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GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25851 Chile saltpetre is

1

N a N O_{3}

2

K N O_{3}

3

N a_{2} S O_{4}

4

N a_{2} S_{2} O_{3}

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25852 Which of the following is not an ore of magnesium

1 Magnesite

2 Dolomite

3 Gypsum

4 Carnalite

Explanation:

Gypsum $(C a S O_{4} .2 H_{2} O)$ is an ore of calcium. Dolomite $(C a C O_{3} . M g C O_{3})$ , Magnesite $(M g C O_{3})$ and Carnalite $(M g C O_{3})$ are the ores of Magnesium.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25853 Which of the following is not a mineral of iron ?

1 Magnetite

2 Siderite

3 Smithsonite

4 Limonite

Explanation:

Magnetite $(F e_{3} O_{4}),$
Siderite $(F e C O_{3}),$
Limonite $(F e_{2} O_{3} .3 H_{2} O)$ and Haematite
$(F e_{2} O_{3})$ are ores of Iron.
Only Smithsonite is not an ore of Iron.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25854 The ore carnalite is represented by structure:

1

N a_{2} A l_{2} O_{3}

2

N a_{3} A l F_{6}

3

K C l . M g C l_{2} 6 H_{2} O

4

F e_{3} O_{4}

Explanation:

(c) Carnalite is an important ore of magnesium. It is $K C l . M g C l_{2} .6 H_{2} O$

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25851 Chile saltpetre is

1

N a N O_{3}

2

K N O_{3}

3

N a_{2} S O_{4}

4

N a_{2} S_{2} O_{3}

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25852 Which of the following is not an ore of magnesium

1 Magnesite

2 Dolomite

3 Gypsum

4 Carnalite

Explanation:

Gypsum $(C a S O_{4} .2 H_{2} O)$ is an ore of calcium. Dolomite $(C a C O_{3} . M g C O_{3})$ , Magnesite $(M g C O_{3})$ and Carnalite $(M g C O_{3})$ are the ores of Magnesium.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25853 Which of the following is not a mineral of iron ?

1 Magnetite

2 Siderite

3 Smithsonite

4 Limonite

Explanation:

Magnetite $(F e_{3} O_{4}),$
Siderite $(F e C O_{3}),$
Limonite $(F e_{2} O_{3} .3 H_{2} O)$ and Haematite
$(F e_{2} O_{3})$ are ores of Iron.
Only Smithsonite is not an ore of Iron.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25854 The ore carnalite is represented by structure:

1

N a_{2} A l_{2} O_{3}

2

N a_{3} A l F_{6}

3

K C l . M g C l_{2} 6 H_{2} O

4

F e_{3} O_{4}

Explanation:

(c) Carnalite is an important ore of magnesium. It is $K C l . M g C l_{2} .6 H_{2} O$

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25851 Chile saltpetre is

1

N a N O_{3}

2

K N O_{3}

3

N a_{2} S O_{4}

4

N a_{2} S_{2} O_{3}

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25852 Which of the following is not an ore of magnesium

1 Magnesite

2 Dolomite

3 Gypsum

4 Carnalite

Explanation:

Gypsum $(C a S O_{4} .2 H_{2} O)$ is an ore of calcium. Dolomite $(C a C O_{3} . M g C O_{3})$ , Magnesite $(M g C O_{3})$ and Carnalite $(M g C O_{3})$ are the ores of Magnesium.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25853 Which of the following is not a mineral of iron ?

1 Magnetite

2 Siderite

3 Smithsonite

4 Limonite

Explanation:

Magnetite $(F e_{3} O_{4}),$
Siderite $(F e C O_{3}),$
Limonite $(F e_{2} O_{3} .3 H_{2} O)$ and Haematite
$(F e_{2} O_{3})$ are ores of Iron.
Only Smithsonite is not an ore of Iron.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25854 The ore carnalite is represented by structure:

1

N a_{2} A l_{2} O_{3}

2

N a_{3} A l F_{6}

3

K C l . M g C l_{2} 6 H_{2} O

4

F e_{3} O_{4}

Explanation:

(c) Carnalite is an important ore of magnesium. It is $K C l . M g C l_{2} .6 H_{2} O$

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25851 Chile saltpetre is

1

N a N O_{3}

2

K N O_{3}

3

N a_{2} S O_{4}

4

N a_{2} S_{2} O_{3}

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25852 Which of the following is not an ore of magnesium

1 Magnesite

2 Dolomite

3 Gypsum

4 Carnalite

Explanation:

Gypsum $(C a S O_{4} .2 H_{2} O)$ is an ore of calcium. Dolomite $(C a C O_{3} . M g C O_{3})$ , Magnesite $(M g C O_{3})$ and Carnalite $(M g C O_{3})$ are the ores of Magnesium.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25853 Which of the following is not a mineral of iron ?

1 Magnetite

2 Siderite

3 Smithsonite

4 Limonite

Explanation:

Magnetite $(F e_{3} O_{4}),$
Siderite $(F e C O_{3}),$
Limonite $(F e_{2} O_{3} .3 H_{2} O)$ and Haematite
$(F e_{2} O_{3})$ are ores of Iron.
Only Smithsonite is not an ore of Iron.

GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

25854 The ore carnalite is represented by structure:

1

N a_{2} A l_{2} O_{3}

2

N a_{3} A l F_{6}

3

K C l . M g C l_{2} 6 H_{2} O

4

F e_{3} O_{4}

Explanation:

(c) Carnalite is an important ore of magnesium. It is $K C l . M g C l_{2} .6 H_{2} O$

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