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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1
Correct answer would be Hedenbergite(A)... Well it's quite visible in the chemical formula of the respective mineral. Hypersthene chemical formula is --> CaFeSi₂O₆ now breaking it in terms of oxides we have, CaO.FeO.2SiO2 ... So clearly, equal moles of CaO and FeO.