Hi, 

Deemed universities are those cluster of colleges which have been recognised and given the status of university. They have their own governing and administrative body.

While cetral universities are accredited as universities and are under the jurisdiction of department of higher education.

Some central universities are BHU, Jamia millia islamia, AFMC etc. 

Deemed universities are kmc manipal, kims, ims sum, amrita institute of medical science etc

All the best