Gypsum is a soft sulfate mineral composed of hydrated calcium sulfate, with the chemical formula CaSO₄·2H₂O. It is a common mineral found in evaporite deposits and is widely used in construction materials (like plasterboard and cement) and as a fertilizer.
Which one of the following materials contains calcium?
Asked in UPPCS Prelims 2019 · Topic: Metals, Minerals, Ores: Properties, Uses (Important ores of common metals (e.g., iron, aluminum, copper, zinc, lead, mercury) and their chemical formulae)
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