Question

why does zinc metal react with sulphuric acid and give hydrogen gas but copper does not

Answer 1

We know that as per reactivity series$\textbf{ Zn}$ is more reactive than the $\textbf{Cu}$, also Zn is more reactive than the$\textbf{ H }$.

So, in chemical reaction Zn replaces H from thier salt, while Cu which is least reactive than H can't do so.

Answer 2

we know that zinc is more reactive metal than copper so it react with sulphuric acid and give hydrogen gas