What does it mean when a metal sphere has a zero net charge?

Question

How would i draw the charge distribution on the sphere if there were a positive charge close to the right it?

Answer 1

The charge will be present in a body if no. of protons and the number of electrons in the body differ from each other . When  a metal sphere has zero net charge, it means the no. of protons and electrons present in the sphere are equal and they don't differ from each other.