Hello aspirant!

Answering your question-

As per Council Of Architecture Regulations, a candidate applying to any school/colleges of architecture in India should have 50% marks in 10+2 or equivalent examination with minimum 50% marks in Physics, Chemistry and Mathematics and 40% score in their 12th boards that means yes you have to pass in all the main subjects to be eligible for this course.

Hope this helps you.

All the best for your future.