MCQ
धोबिया सोडा का रासायनिक सूत्र क्या है?
- A$Na _2 CO _3 . 7 H _2 O$
- B$Na _2 CO _3 . 5 H _2 O$
- ✓$Na _2 CO _3 . 10 H _2 O$
- D$Na _2 CO _3 . H _2 O$
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