M.Arch

Hello Mukund,
Eligibility for M.Arch is graduation in architecture and hence doing B.Tech will not make you eligible for admission in M.Arch.

Please refer to the link provided below for details regarding a course in M.Arch from Sushant School of Art and Architecture. You can download their brochure which contains important details like eligibility, application dates, fee structures and contact information.
https://www.shiksha.com/architecture-planning/interior-design/course/m-arch-in-interior-architecture-sushant-school-of-art-and-architecture-ansal-university-gurgaon-276305

Master of Architecture Eligibility:
Any Bachelor of Architecture (B.Arch) passed student is eligible for M.Arch Degree course. Candidates appearing for the final exams of B.Arch can also apply.
Those eligible need to acquire a minimum of 50% in the entrance examination.
Some institutes require an aptitude test and an interview for admission into the Master's Degree in architecture.
Some of the Architecture Entrance Examinations:
NATA Aptitude Test
JNTU PACET
School of Planning and Architecture Entrance Exam

Please tell us about the institute you wish to get in so that we can guide you better.

Please refer to the link provided below for a list of colleges and the entrance exams you need to clear to gain admission into these colleges:
https://www.shiksha.com/architecture-planning/colleges/m-arch-colleges-india

Hello Naveen,
As you complete your B.Tech, you can do M.Tech not M.Arch and next is SRM University. So, it is good private college but firstly you should try in IIT and NITs or BITS-Pilani to get admission in M.Tech