Maharashtra State PSC 2014 Solved Paper

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Question : 66 of 100

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The composition of cement is:

CaO - SiO₂ - Al₂O₃
CaO - Al₂O₃ - MgO
SiO₂ - Al₂O₃ - AlCl₅
CaO - SiO₂ - AlCl₃

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