Class 12 NEET Chemistry D And F Block Elements Questions

Zinc is on the top position of hydrogen in electrochemical series. So, Zn displaces H2 from dilute H2SO4 and HCl with liberation of H2.
Zn+H2SO4 →ZnSO4+H2
On the other hand HNO3 is an oxidising agent. Hydrogen obtained in this reaction is converted into H2O.
Zn+4HNO3 →Zn(NO3)2 +2NO2+2H2O