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Which of the following is not an ore of Magnesium?

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+1 vote
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in Construction & Building Materials by (189k points)
Which of the following is not an ore of Magnesium?

(a) Cassiterite

(b) Dolomite

(c) Kieserite

(d) Carnallite

The question was asked during an online exam.

This interesting question is from Non-Ferrous Metals and Alloys in portion Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

1 Answer

+1 vote
by (1.2m points)
The correct answer is (a) Cassiterite

Easy explanation: The principle ores of magnesium are magnesite, kieserite, dolomite and carnallite. It does occur in the free state in nature. Cassiterite is an oxide of tin.

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