As you have asked about the jobs for MBA graduates in ONGC, I am giving you information about it

I want to tell you that currently there are no jobs or recruitment for MBA is going on in ONGC.
However, you can check its website regularly to know about it.
To check it, you can follow steps given below

Go to ONGC website
Then place cursor on the Career option
Then click on Notices option,
The new page open look like


Here you will get the details about the MBA jobs

Here I get the following details

Advt No. 01/2016 (Assam Asset) for Recruitment of Contract Medics
Walk-In-Interview for Engagement of General Duty Medical Officer on Contract Basis for Ahmedabad and Cambay
Walk-in-Interview for Medical Officers on contract basis at Chennai
Advertisement for Walk in Interviews for Field Medical Officers and GDMO at Goa