Ph.D

In case of PhD degree, the institute plays lesser role.
The only things which needs attention before registration is the accreditation of that institute.
You need to check that the private institute is affiliated with which government body.
Other important things which actually matters for P.hD. degre

You are not eligible to seek admission in most of B-Schools because you do not meet eligibility criteria of min. 50% marks in graduation study. However, you can appear for XAT and try at institutes accepting CAT score which does not have a minimum marks eligibility criteria.

So you have started the study for entrances, first of all collect last 5 year question papers from the internet. Practice writing at faster speeds as the questions will be very long and will consume long time. Write 3-4 pages each day.

Hi Priyanka,
As per UGC list, the Himalayan University is not approved. Kindly have a look at the link below:
http://www.ugc.ac.in/deb/pdf/Recognition for 2016-17- DEB (16.09.2016).pdf

You are advised to evaluate doing PhD in management from IGNOU. It is the best university for doing PhD by distance learning.