Working in government sector can have side income business at the same time?

It depends on your contract, however many government posts do not permit moonlighting. If there is nothing in your contract then I would suggest speaking directly to your manager.

Take a look at your contract or binding letter that was issued at the onset of the employment. Understand your rights and obligations. And then take a more informed decision

As far as I know, most of the government jobs doesn't allow that, which country are you referring to?

No and you shouldn’t get distracted as well :)

Don't think so ba, to be on the safe side

You shld look at your employment contract

Can, BUT try not to get caught

I dont think you can do so

I don’t think you can

Don’t get caught.