railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Science

ক্যালসিয়াম হাইড্রক্সাইডের সঠিক সূত্র কী?

1
CaOH
2
Ca(OH)4
3
Ca(AIOH)4
4
Ca(OH)2
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