Which of the following statements are true

Options

A. Cold and very dilute `HNO_(3)` forms `NH_(4)NO_(3)` form Na with Zn or Sn
B. onc. `HNO_(3)` forms `H_(2)Sn` with Sn
C. Cold and more concentrated `HNO_(3)` form `N_(2)` with Cu
D. All are correct

Answer

D