Question

Zn+H2SO4->ZNSO4+H2 interesting feature

Answer 1

HERE Metal react with acid to form Salt and hydrogen gas

Answer 2

a) Zn + H₂SO₄ ------>ZnSO₄ + H₂O

Here Zn has displaced 'H₂' from its sulfate solution and formed its own sulfate solution that is ZnSO₄. This tells us that Zn (Zinc) is more reactive than H₂(Hydrogen). If you observe the chemical reactivity series also you can see that Zinc has been placed quite higher than hydrogen.So Zinc is more reactive element and hydrogen less reactive . This process is called displacement reaction.