Dear Vigna,

For pursuing B.Arch, you can go for National Aptitude Test(NATA), JEE Main, HITSEEE and CEED. For pursuing M.Arch, you can of course go for GATE exam. These are the following sections from which questions will be asked in GATE for architecture:

Architecture and Design

Building Materials, Construction and Management

Building and Structures

Environmental Planning and Design

Urban Design

Urban Planning and Housing

Planning Techniques and Management

Services, Infrastructure and Transportation

The type of questions in GATE for M.Arch will be Multiple Choice Questions and Numerical type questions and there will be 65 questions of full score 100.

Hope this helps.

Best wishes.