Hello Viswanath,

IISERs are institutes of national importance and offer research based courses in fields of basic sciences and inter disciplinary courses. The admissions require the candidates to have some research background and a bachelor's degree in engineering with at least 60% marks. In addiion the candidates should have qualified an exam of national importance such as GATE, NET,etc.

As for your question, you have a good chance of getting admitted in IISER, remember to apply through their online portals.

Follow these links for more information:

Http://www.iisermohali.ac.in/home/front-page-articles/instructions-phd-aug-2019

Http://www.iisertvm.ac.in/pages/phd_admissions.phpx