[SunilNagpal]

Also, there are entrance exams of individual colleges as well.

For the time being, you may focus on getting respectable grades in 10th and 12th.

Referring to my suggestion for PCMB, opt for the same if you are confident of handling the two together (it's very much possible). For JEE you will require maths as a subject studied in 12th. And given that appearing for JEE is going to be more helpful in getting an engineering degree admission, maths is going to be useful.

If you are not comfortable in Maths, you may opt for non-engineering path as well by seeking admission in BSc courses. For engineering courses, if you manage to get a seat without maths (in some private college), still at some point of time, you "will" have to expose yourself to Maths. I was a PCB student, did a B.Tech in Biotech from private university (LPU),.studied quite a lot of Maths in BTech, then appeared for GATE, went to IITD (again studied a lot of math there) and right now my bread and butter is Data analysis (again a lot of Maths )