(B) Chromite ore $(FeO \cdot Cr_2O_3)$ is a magnetic ore. It is concentrated by the magnetic separation method,where the powdered ore is passed over a

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(B) Chromite ore $(FeO \cdot Cr_2O_3)$ is a magnetic ore. It is concentrated by the magnetic separation method,where the powdered ore is passed over a magnetic belt to separate the magnetic ore particles from non-magnetic impurities.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Concentration

Easy

The concentration of chromite ore $(FeO \cdot Cr_2O_3)$ is done by which of the following methods?

A
Leaching
B
Magnetic separation
C
Froth flotation
D
Calcination

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Concentration

Which one of the following is true?

EasyKCET 2011

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Which of the ores mentioned in the table can be concentrated by the magnetic separation method?

Metal Ores and Composition

$Aluminium$ $Bauxite: AlO_{x}(OH)_{3-2x} (0 < x < 1)$; $Kaolinite: [Al_{2}(OH)_{4}Si_{2}O_{5}]$

$Iron$ $Haematite: Fe_{2}O_{3}$; $Magnetite: Fe_{3}O_{4}$; $Siderite: FeCO_{3}$; $Iron pyrites: FeS_{2}$

$Copper$ $Copper pyrites: CuFeS_{2}$; $Malachite: CuCO_{3} \cdot Cu(OH)_{2}$; $Cuprite: Cu_{2}O$; $Copper glance: Cu_{2}S$

$Zinc$ $Zinc blende or Sphalerite: ZnS$; $Calamine: ZnCO_{3}$; $Zincite: ZnO$

Metal	Ores and Composition
$Aluminium$	$Bauxite: AlO_{x}(OH)_{3-2x} (0 < x < 1)$; $Kaolinite: [Al_{2}(OH)_{4}Si_{2}O_{5}]$
$Iron$	$Haematite: Fe_{2}O_{3}$; $Magnetite: Fe_{3}O_{4}$; $Siderite: FeCO_{3}$; $Iron pyrites: FeS_{2}$
$Copper$	$Copper pyrites: CuFeS_{2}$; $Malachite: CuCO_{3} \cdot Cu(OH)_{2}$; $Cuprite: Cu_{2}O$; $Copper glance: Cu_{2}S$
$Zinc$	$Zinc blende or Sphalerite: ZnS$; $Calamine: ZnCO_{3}$; $Zincite: ZnO$