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General Principles and Processes of Isolation of Elements

Extraction of Crude Metal from Concentrated Ore

Extraction of {Al} from bauxite is carried out by various stag

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Extraction of $Al$ from bauxite is carried out by various stages in Hall's process which involves I. Removal of sand and heavier impurities by gravity separation method. II. Removal of magnetic impurities by magnetic separator. III. Fusing the concentrated finely divided ore with $Na_{2} CO_{3}$ and $CaCO_{3}$ and then extracting with $H_{2} O$ IV. Ignition at $110 0^{\circ} C$ . V. Passing $CO_{2}$ . Correct order of these steps are

I, II, III, V, IV

II, I, III, V, IV

V, IV, III, I, II

I, III, V, IV, II

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Extraction of

Al

from bauxite is carried out by various stages in Hall's process which involves I. Removal of sand and heavier impurities by gravity separation method. II. Removal of magnetic impurities by magnetic separator. III. Fusing the concentrated finely divided ore with

Na_{2} CO_{3}

and

CaCO_{3}

and then extracting with

H_{2} O

IV. Ignition at

110 0^{\circ} C

. V. Passing

CO_{2}

. Correct order of these steps are

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Text solutionVerified

(b) II. Magnetic impurities should be separated before gravity separation as it involves

H_{2} O

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Question Text	Extraction of $Al$ from bauxite is carried out by various stages in Hall's process which involves I. Removal of sand and heavier impurities by gravity separation method. II. Removal of magnetic impurities by magnetic separator. III. Fusing the concentrated finely divided ore with $Na_{2} CO_{3}$ and $CaCO_{3}$ and then extracting with $H_{2} O$ IV. Ignition at $110 0^{\circ} C$ . V. Passing $CO_{2}$ . Correct order of these steps are
Topic	General Principles and Processes of Isolation of Elements
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1
Upvotes	66

Text solutionVerified

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