MCQ
जिप्सम का रासायनिक सूत्र है
- A$FeSO _4 \cdot 7 H _2 O$
- B$CaSO _4 \cdot 1/2 H _2 O$
- C$CaSO _4 \cdot 5 H _2 O$
- ✓$CaSO _4 \cdot 2 H _2 O$
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