Greetings !!

BCA is Bachelor of Computer Application , course duration is for 3 years its a graduation degree,  where as B Tech is Bachelor of Technology (IT / CSE) , its an engineering degree ,course  duration is for 4 years. BCA Primarily focuses on the Computer programming, But in B TECH you will be studying about the technical aspect in detail along with programming and all

No course can be categorized as good or bad, what ultimately decides is one's personnel interest, passion towards the subject. If you want to be a good computer programmer in supervisory level i would suggest you to go for B TECH, But if you want to work in an intermediate level then better pursue BCA. If any doubts, pls feel free to ask !!

Wish You Good Luck !!

Thank You !!