Bihar Police Constable 1-Oct-2023 Shift 1 Paper

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Question : 97 of 100

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Chemical formula of Plaster of Paris is -

CaSO₄ . 2H₂O
$(CaSO_{4}) .\;{1}/{2}H_{2}O$
Ca(NO₃)₂
Ca₃(PO₄)₂

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