MCA

Hi, MCA is a three years degree course. Please see below list where you will find the details of colleges. Https://ask.shiksha.com/which-are-the-top-colleges-in-bangalore-offering-bca-and-mca-qna-4326436.

No need to go for MCA because you will be wasting your time, start preparing for IAS. Even if you are not able to get through IAS. You will be able to get a job on the basis of BCA if you have good technical knowledge and you can always pursue MCA correspondence along with your job.

MCA at Swami Vivekanand Subharti University will be a 3 year course with 6 semesters.

Check out the article below for MCA:
https://www.shiksha.com/it-software/articles/top-mca-exams-in-india-blogId-13629.

Follow the link below for MCA colleges and filter colleges according to region and fees :
https://www.shiksha.com/it-software/colleges/mca-colleges-india.

You need to complete your BCA first or you need to be in the final year for BCA to eligible for the examination. For details, check the link below : https://www.shiksha.com/university/national-institute-of-technology-durgapur/exams/nimcet.

Admission in MCA at CCS University is done through UPSEE. For further details, check out the link below : https://www.shiksha.com/it-software/course/master-of-computer-application-sir-chotu-ram-institute-of-engineering-and-technology-meerut-38037 https://www.shiksha.com/b-tech/exams/upsee.

Eligibility of MCA:
Graduation in any stream is the basic eligibility for MCA. The eligibility for qualifying marks in graduation differs from institute to institute. Most of the institutes require 45 to 50 % aggregate in qualifying exam for taking admission. Reserved categories get some relaxation in aggregate percentage.
Apart from this, there is another prerequisite for taking admission in MCA degree; one must have studied mathematics in 10+2 as a compulsory subject.

No you can't because for MCA in JNU you need to have maths at 10+2 level.