MCQ
निम्नांकित यौगिकों में कौन अम्ल है?
- A$\mathrm{CuO}$
- ✓$\mathrm{H}_{2} \mathrm{SO}_{4}$
- C$\mathrm{Na}_{2} \mathrm{O}$
- D$\mathrm{Ca}(\mathrm{OH})_{2}$
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