Strides Pharma Science Instrumentation Engineer Trainee interview questions

I got the call letter through naukri jobsite and went to bangalore to attend the interview at strides shasun (opposite to IIM bangalore) Ist round was written test which comprised of aptitude and the basics of core subject in instrumentation. IInd round was based on technical section where they asked about PLC's,DCS and their difference etc and asked to draw any ladder logic like automate the filling of water inside tank.and they asked about the B.Tech project IIIrd round was the HR round where they asked about our interests and hobbies and this time you should be very honest about yourselves because they will catch at every mistake you make while answering this.