what r the best jobs for me??? i have done b-tech. in mech. engg. from ptu.. n i required a job on d basis of my this qualification

You may try for jobs in private auto sector like TATA or TVS motors or Bajaj etc or even government companies like NTPC, ONGC etc. For job openings, login to Naukri.com

The best jobs for a mechanical graduate would be in automobile sector( Volvo-Eicher, M&M, Bajaj, Ashok Leyland, Telco), aviation sector ( pvt airlines, AAI), defense (Army, Navy, Air Force), railways, DMRC, NHAI and PSUs.

I would suggest you to create account in websites like naukari.com and you will get relevant jobs the best trick is that you should update the resume everyday i.e just atleast edit resume everyday if you day so you will be getting more information about jobs than any other ; I got this information

You can go in software field also,just you have to do some software courses else you can try in mechanical field.