Statement I : Al liberates hydrogen gas with both NaOH and HCl
Statement II : Al is amphoteric metal
"Al" shows amphoteric nature,since it reacts with both acids and bases.
2Al + 6HCl 2AlCl3 + 3H2
2Al + 2NaOH + 2H2O 2NaAlO2 +3H2
Therefore statement-I and statement-II are true