MCQ
सुहागा (बोरेक्स) का रासायनिक:
- A$CaSO _4 \cdot B _4 O _7 \cdot H _2 O$
- B$MgSO _4 \cdot B _2 O _4 \cdot 2 H _2 O$
- ✓$Na _2 B _4 O _7 \cdot 10 H _2 O$
- D$MgCl _2 \cdot B _4 O _{10} \cdot 10 H _2 O$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.