Patna

No, only computer is compulsory.

Yes, maths is compulsory.
BCA eligibility: PCM at inter/+2 level.

Hi there. Well life at CNLU Patna can't be compared with Amity or Alliance at all. However it's not the best NLU but surely better than Amity or Alliance. Also you have an NLU tag which makes you stand indifferent among others. Internships can be managed on your own based on your CV. Also placements would depend on your marks again.

Hi Shikha!
Although the college has a placement cell, it is not that great. But the reputation of this college is good so sometimes this college certificate works well and proves to be beneficial to get a job in the market.

The chances of getting into N. College, Patna University - B.Sc.(Hons.) in Mathematics with the general category are very less.

Hi Shikha,
College of Commerce, Patna gives admission for BCA if you are from PCM at intermediate or +2 level. Means, maths is compulsory there. Sorry for that. Search for other colleges. For more information about BCA visit:
http://www.cocpatna.org/Admission.aspx

Hi Shikha,Firstly the Placement and job opportunities are totally based on the student's talent and as they mentioned they provided good placements to their students. For more clear information please check the link mentioned below
http://www.cocpatna.org/.

Since both the colleges are similarly great, I truly lean towards you ought to go for mechanical or any center branch in IIT (ISM) as after it got moved up to an IIT the school arrangements has expanded even from previously and countless are going to the grounds for grounds enlistment. So, its better that you pick a superior branch where possible, in fact, there's extremely very little contrast between these two.

For July 2018 session, the last date is June 30. You can physically visit IGNOU regional centre or you can apply online for admission. For more, here is a link for you to follow-
http://rcpatna.ignou.ac.in/
All the best.