BCA

Yes, it is a good option to go for MBA after BCA. You can look for MBA in specialisation like Business Analytics, Data Science, Financial engineering, Operations. Salary package mainly depends on the organization, which comes for campus placements. If you are eligible for campuses with high offers than you have good chances to convert it. No doubt, B-Schools which are in top 30 ranks to have good placement scenarios and gives good chances of placing students in top corporate organization.

Sure there are many exams like CET, PAT etc.

I would suggest you to do MCA after BCA because in comparison to BCA, you will get more job opportunities after doing MCA and if you have interest in management then you can also do MBA. You will get more opportunities and wide scope after doing MCA in government as well as private sector.

Here you get complete list of colleges offering BCA in Jaipur
https://www.shiksha.com/it-software/colleges/bca-colleges-Jaipur

Eligibility criteria for BCA 2019: (a) Candidates must have minimum 50% (45% for
SC/ST/PwD) marks in Class X*. (b) Candidates must have passed Class XII*
Equivalent Qualifying Examination with
Minimum
50% (45% for SC/ST/PwD) marks with English
And Mathematics / Computer Science /
Information Practice / information. Tech & Prog as subjects in the qualifying examination. For other criteria please visit https://www.bitmesra.ac.in/UploadedDocuments/admadmission/files/BBA n BCA 2019 - Eligibility Criteria. Pdf.

Axis College is the better place to make your career settled. Many companies come like Policy bazar, HCL, TCS, Wipro etc. visit the campus. The average package of Axis College is INR. 3.4 lacs, and Axis College gives you better chance to make your career better.

The candidates must have passed 10+2 examination from a recognized board to be eligible for Training of Police Constables (Civil) from Karnataka Police Academy.

Kindly visit this link:
https://www.shiksha.com/b-tech/resources/ap-eamcet-college-predictor

Yes, you can take admission in Amity University. You are eligible for the same.
Good luck.