Teaching Bihar B.Ed CET Mock Test Series 2025 General Science Chemistry Periodic Table

প্লাস্টার অফ প্যারিসের রাসায়নিক সংকেত কী?

1
CaSO4, MgO
2
CaSO4, 5H2O
3
(CaSO4)2, 2H2O
4
2CaSO4, H2O
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