Q.

Which one of the following consists only the ores of magnesium?
(a)Magnesite, carnallite, cassiterite, dolomite, epsom salt
(b)Magnesite, carnallite, dolomite, kieserite, epsom salt Right sign
(c)Magnesite, carnallite, dolomite, Galena, malachite
(d)Magnesite, cassiterite, kieserite, Galena, malachite
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