Which of the following elements can give `NO_(2)` as a by product on reaction with conc. `HNO_(3)`?

Pb on reaction with conc. HNO_3 gives

Pb on reaction with conc. HNO_3 gives

The product when Sn reacts with conc HNO_(3) is:

Which of the following metal does not produce NO_(2) gas as a side producet when it reacts with conc. HNO_(3) ?

Phenol on treatment with conc. HNO_(3) gives

Phenol on treatment with conc. HNO_(3) gives