BCA

To be eligible for admission into BCA, a candidate needs to score at least 45% in their +2. The eligibility criteria is different for every university. Some universities demand for 60% in +2 with Maths and computer Science as mandatory subjects and some universities don't. So, it depends upon from which university you want to do your BCA. Students of every stream can pursue BCA without any problem but the criteria has to be kept in mind before seeking admission. If you want to learn programming languages which you will be studying in your BCA course then you can check out this app which is specially designed and developed for BCA students. It has programs and assignments of languages like C, C+ and Java with their outputs.
https://play.google.com/store/apps/details?id=technark.bca_courprogramming

Yes, you are eligible for admission into BCA. Every university has different criteria for providing admission into BCA, so you can try different universities and colleges and check their eligibility criteria for admission into BCA. You can get admission, but you'll have to find that particular university which will provide you admission. If you want to learn programming languages which you will be studying in your BCA course then you can check out this app which is specially designed and developed for BCA students. It has programs and assignments of languages like C, C+ and Java with their outputs. You'll be studying these languages in your 3 years of BCA.
https://play.google.com/store/apps/details?id=technark.bca_courprogramming