Which of the following metals is rendered passive by conc. `HNO_(3)`?

Which of the following metals rendered passive with Conc. HNO_(3)

Which of the following is rendered passive by conc. HNO_(3) is

Which fo the following metal is rendered passive by the action of highly concentrated nitric acid (~80%)?

Which of the following coinage metal is // are dissolved in conc. HNO_(3) ?

Metal which become passive with conc. HNO_(3)

Metal which become passive with conc. HNO_(3)

Which of the followinngg species is/are formed when conc. HNO_(3) is added to conc. Sulphuric acid?

Which of the followinngg species is/are formed when conc. HNO_(3) is added to conc. Sulphuric acid?