I want to know that after completing my diploma in architecture can i go for bachleros degree in interior design

Kanchi, let me tell you about the field of design. Design is a field that is age old and has been evolving every year like science. Sometimes student Artists are too much enamoured by Fine Arts preventing them to look objectively at Design. They must read this http://bit.ly/SXc9GD. Again like scienc

I would suggest that BArch as a major course and Interior Design as a add on course will be more helpful for you in the long term.

Yes for sure you can do your BDesign after your diploma. You just log in some good colleges like JJ, LPU, National institute of design etc to know the best academic schemes