MCQ
$PbO_2$ reacts with Conc. $HNO_3$,the gas evolved is
- ✓$NO_2$
- B$O_2$
- C$N_2$
- D$N_2O$
✓
Answer
Correct option: A.
$NO_2$
a
Oleum $\to$ pyrosulphuric acid ($H_2S_2O_7$)
Oleum $\to$ pyrosulphuric acid ($H_2S_2O_7$)
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