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Extraction of Magnesium

Which of the ...

Question

Which of the following ore contains both magnesium and calcium

A

Magnesite

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B

Dolomite

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C

Carnellite

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D

Phosphorite

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Solution

The correct option is B
Dolomite

Dolomite is CaMg(CO₃)₂

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Similar questions

Q. Dolomite contains both calcium and magnesium:

Q. Which of the following molecular formulae represent the ore carnallite?

Q. Out of the following ores, how many ores do not contain more than one metal in their composition.
Argentite, Barytes, Magnesite, Fluorspar, Carnalite, Dolomite, Chalcocite, Asbestos, Calamine.

Q. Consider the following statements and arrange in the order of true/false as given in the codes.

S_{1}

: Cuprite, Limorite and Zincite are oxide ores.

S_{2}

: Dolomite contains

C a C O_{3}

M g C O_{3}

.

S_{3}

: Chalcocyte and azurite are ores of copper.

S_{4}

: Feldspar and mica minerals contain aluminium.

Q. Match the column (I) and (II) and select the correct answer using the codes given below.

Column-I	Column-II
(a) Argentite	(1) Halide ore of magnesium
(b) Cuprite	(2) Carbonate ore of iron
(c) Siderite	(3) Oxide ore of copper
(d) Carnallite	(4) Sulphide ore of silver

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