Question

who give the answer first I will mark the brain list

Answer 1

The ionic Equation for the above one is, 

             Zn  +  2H⁺  + SO₄⁻²  ---------------->  Zn⁺²  +  SO₄⁻²  + H₂

Note that the charge and atoms are balanced on both the sides.

→The 2 half equations are

1)    Zn  ------------>  Zn⁺²  +  2e⁻

here Zinc is getting oxidised, hence it is an oxidation-half reaction.

2)   2H⁺  +  SO₄⁻²   +  2e⁻  ---------------->  H₂  + SO₄⁻²

here, as hydrogen is getting reduced, it is a reduction-half reaction.

When we add both the equations the electrons on either side get cancelled and the final ionic equation is written as,

             Zn  +  2H⁺  + SO₄⁻²  ---------------->  Zn⁺²  +  SO₄⁻²  + H₂

Since 2 substances are simultaneously getting reduced and oxidised, it is called as a redox reaction.