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Mond's Process

Magnesium is ...

Question

Magnesium is commercially extracted by:

A

Self-reduction process

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B

Dow's sea process

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C

Thermite reduction

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D

Leaching followed by metal displacement

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Solution

The correct option is B Dow's sea process
Sea water contains lots of $M g C l_{2}$ , extraction of Mg from sea water is known as Dow sea water process.

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Q. Which of the following metals (s) is/are commercially extracted by self reduction method from their corresponding ore?

F e_{2} O_{3}, S n O_{2}, P b S, M g C l_{2}, H g S, Z n S, A l_{2} O_{3}, A g_{2} S, C u_{2} S

Consider given ores and calculate the value of expression

(\frac{Q + R}{P \times S})

, where,
P = Number of ores from which the metal is commercially extracted by Hydrometallurgy.
Q = Number of ores from which the metal is commercially extracted by Self-reduction.
R = Number of ores from which the metal is commercially extracted by carbon reduction.
S = Number of ores from which metal is commercially extracted by electrolyitc reduction.

Q. Assertion :Magnesium is extracted by electrolytic reduction.
Reason: All metals are extracted by electrolytic reduction.

Q. Highly electropositive metal (s) can not be commercially extracted by carbon reduction process at high temperature because these :

Q. In which of the following pair of metals, both are commercially extracted from their respective ores by carbon reduction method?

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