BCA

Yes, only basic concepts are be taught in BCA and MCA regarding calculus especially differentiation and integration.

As far as my knowledge goes, B.Tech in EEE is better in terms of placement as well as salary.

CET ranking is important for colleges that accept CET score. Apart from these, colleges/universities which conducts own entrance test has nothing to do with the CET ranking, even for the colleges which takes admission based on 12th percentage.

Dear Jaspreet,
As you are in final year of BCA, you should do MCA after that because your basic is already cleared in BCA. But, if you want to do go for management field, you can pursue MBA but for that, you will have to work hard. You will have to pay keen interest towards your study.
All the best.

You need to score a minimum of 65 percent marks in class 12th to pursue BCA.

Following are the best options for you:
1) DAV College - [DAVC], Chandigarh
2) Chandigarh University - [CU]
3) Mehr Chand Mahajan Dayanand Anglo Vedic College For Women - [MCM DAV], CHANDIGARH

You are not eligible for M.Sc remote sensing based on your BCA qualification. The eligibility qualification is M.Sc engineering. However, you will be eligible for the course after completing MCA.