Question

name two metals which produces hydrogen gas by the reaction with both acid and base

Answer 1

The metal is zinc

Zn + 2HCl gives rise to ZnCl + H2

Zn + 2NaOH gives rise to Na2ZnO2 + H2

Other meta is sodium

Na2 + 2HCl gives rise to 2NaCl + H2

Na+2H2O gives rise to Na(OH)2 + H2