MCQ
The gas which has higher critical temperature is :
- A$\mathrm{H}_2$
- B$\ce{He}$
- C$\mathrm{N}_2$
- ✓$\mathrm{CO}_2$
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$x\ MnO + y\ PbO_2 + z\ HNO_3 \to a\ HMnO_4 + b\ Pb(NO_3 )_2 + c\ H_2O$
