Normally the questions depends on  the company for which 
you have attended for interview.

Anyway some common questions that can be asked at the end 
of the intervew are

1.Ask the next step process of the intervew?

2.Ask interviewer how company will help you to grow?
  Like in doing certifications,trainings,on job 
  learning oppurtunites...etc.

3.Ask about compnies majour clients?

4.Ask about company HR Policy?

5.Ask their name onece again?

Do remember one thing you should not discuss the salary 
issues with interviewer.

Because it is HR people task

I wanted a suggetion

After the Interview is completed the General anwer is

HR Will contact you.

Should we follow up with the HR

Please reply

Once your done with the interview, you have to
show them that your interested in working there. So ask them
how many tester they have, what they are expecting from you
and also ask them at what stage is the project.