Answer:True
Step-by-step explanation:
By applying Gauss law Electric field is zero everywhere inside the conductor.
According to Gauss law the net flux of an electric field in a closed surface is directly proportional to the enclosed electric charge.
For example
For a Gaussian surface inside a conductor all the points have zero electric field as the system is in equilibrium. This implies net flux is zero and net charge inside is zero . So all the charge must be at surface on conductor.