Yes, you are eligible for the MS after completing MCA, for admission in the MS course you need to appear in the GRE examination. Following are the details of this examination:

Eligibility:
The applicant should have completed M.C.A. or M.Sc. 5 years integrated (IT / CS / Software Engineering) or B.E./ B.Tech. (EEE/ ECE/ Electronics/ IT/ CSE/ I&C/ E&I/Instrumentation) with good academic record from any recognized university……………………..

The Graduate Record Examination (GRE) has following three sections:

Verbal Reasoning Section
Quantitative Reasoning Section
Analytical Writing Ability Section


Here I am giving you the list of top MS Colleges in India:

Birla Institute of Technology and Science
Vidya Vihar, 333031, India ‎


International Institute of Information Technology, Hyderabad
Gachibowli, Hyderabad, Andhra Pradesh 500032, India ‎
+91 40 6653 1000 ‎


Indian Institute of Technology Delhi
Hauz Khas, New Delhi, DL 110016, India ‎
+91 11 2659 7135 ‎


IIT Madras
Delhi Avenue, Indian Institute Of Technology, Chennai, Tamil Nadu 600036, India ‎
+91 44 2257 8280 ‎


IIT Kharagpur
Post Technology, Paschim Medinipur, Kharagpur, West Bengal 721302, India ‎
+91 3222 255 221 ‎