Hydrogen is evolved by the action of cold dil. HNO3 on
Fe
Mn
Cu
Al
Mn +2HNO3 (dil.) → Mn(NO3)2 + H2
Which of the following metals evolves hydrogen on reacting with cold dilute HNO3?
Out of the following, which metal cannot displace hydrogen gas from dil HCl or dil H2SO4?