India

Always go for the college that along with good education provides a platform where one can boost up the skills and can achieve excellence in their streams.you can choose the college based on their ranking.here are some of the premier institutes that are doing exceptionally well nowdays:
1.VIT
2.BITS
3.Lovely Professional University
Lovely Professional University set a record this year by placing highest number of students on the day one second time in a row.Moreover his university is having tie-ups with 50+countries of the world providing an excellent platform to their students to boost the skills.

As far as I know, Jamia Milia islamia is one of the reputed and cheapest colleges to pursue engineering from. Other than that the govt colleges like NITs are cheaper than Pvt ones.

Hey Sooraj,
You can move towards pursuing B.Tech in Computer Science Engineering. Software developers or software engineers are the same thing. You should choose a good university having good placements and ranking from the industry. Some suggested universities -

Hey Devashish,
Placements are nowhere easy. You will have to work hard. However, a university can help you in getting the placement opportunities. Some universities in North India you can consider are listed below. These are having the best placements and industrial rankings as well as collaboration with foreign universities and industries.

What were the reason that you send it for scrutiny or improvement. If you final 12th result came before the last date of the admission through AIR, your score is valid. Defentily you can get AIR.