BCA

40000/ per year for three years.

You can. For BCA only 12th passed is required with 50% marks and English as a compulsory subject. Yes, you can. You should score a minimum of 50% in class 12th to do BCA. As students belonging to BiPC stream are eligible to seek admission in three year BCA course, why can't you make use of this golden opportunity and aspire to achieve the destination of carving as an IT professional.

Yes, with BCA you are eligible for MCA without Maths in class 12th. This is because, To be eligible for MCA it is not mandatory to have Maths in 10 + 2.

BCA would be a suitable degree compared to B.Sc. In Computer Science, although one can pursue MBA after doing both. The major difference here is that BCA is a professional course, hence there are more career opportunities after pursuing BCA as compared to B.Sc.

I think the percentage is not enough to get a seat in Nizam college .
Because you need atleast 85 -90% in your intermediate marks then only you can easily get a seat in Nizam college.
72.9 percentage is the tough call for the admission in Nizam college.

The fee structure at Sri Krishnaveni Degree College for Bachelor of Computer Applications (B.C.A.):
Tuition fees: 15,000
1 year: 15,000
3 years: 45,000

The fee structure at Patliputra University for Bachelor of Computer Applications (BCA) is:
Tuition Fees:15,000
1 Year Fees:15,000
Total Fees: 45,000

The fee structure at Deogiri College for Bachelor of Computer Applications (BCA) is INR 71,785/-. The duration is of 3 years. The eligibility criteria is10 +2 with maximum 45%.

The fee structure at Nehru College ,Ghantikeri for Bachelor of Computer Applications (BCA) is around 2 lakhs INR.

BCA candidates are eligible for the TET entrance exam. Those candidates who have completed graduation degree with above 50% marks from a recognised university are eligible for TET exam. B.Ed degree is essential for TET exam. Your age should be in between 18 to 40 years. TET Eligibility:
-You must have passed graduation with 2 year Diploma In elementary education or B.Ed course. - You must have passed senior secondary with 4 year Bachelor in elementary education.