MCQ
धोने का सोडा का आण्विक सूत्र है
- A$Na _2 CO _3$
- B$Na _2 CO _3 \cdot 2 H _2 O$
- C$Na _2 CO _3 \cdot 10 H _2 O$
- D$Na _2 CO _3 \cdot 5 H _2 O$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.