That would be up to the plan.
Some plans allow hardship withdrawals and some do not and it is up to the plan to decide what is and what is not a hardship.
Talk to your HR person at work.
401k is governed by US government rulings in the irs code. this is not allowable as an expense. read up on irs.gov
you will have to contact YOUR 401k administrator and see if they allow that
Read your plan provisions. Some plans so allow, but they are not REQUIRED to do so.
no that is not one of the reasons