MCQ
संगमरमर का रासायनिक सूत्र क्या है?
- ✓$\mathrm{CaCO}_{3}$
- B$\mathrm{MgCO}_{3}$
- C$\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}$
- D$\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}$
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