Engineering

The best government engineering colleges in terms of placements are-
1. IIT Bombay
2. IIT Delhi
3. NIT
4. BITS Pilani
5. DTU.

If you see a placement, it all depends on your communication skills and not branch which you are selecting. But, I will suggest you to select technical stream that is B.Sc.

Hi,
As you brother is pursuing is diploma, he can join marine engineering after completing his diploma and 87% is a good score.

Yes, you can join Coimbatore Marine college for the course but remember the eligibility criteria that is 60% mandatory in PCM. If you fail to get this score you'll not be able to get admission.

Hi, As you have got only 55% in PCM, it is very difficult for you to get good college for the course because the minimum requirement is 60% in PCM and you have failed to reached this score so if you want to get any good college reappear for 12th exam next year.

Hi, The government college for marine engineering is IMU that is Indian Maritime University. This is best for marine engineering but I'll suggest you to go to any private college like Tolani or Anglo Eastern these have their own ships and placement is also good.

Hi,
B.Tech have advantage here. BE covered the theoretical aspect and focuses on fundamentals, while B.Tech is a skill oriented course and emphasis are laid on practical rather than theory. B.Sc is a three year programme and course contents and syllabus level is somewhat easier than that of B.Tech a

Amity University Raipur is recognized by University Grants Commission (UGC). The degrees provided are totally valid because it has been ratified by an Act of State legislature of Chhattisgarh. Amity University is a Bonafide University established by a State Act and that's why it does not require AIC

There are many good engineering college besides IIT's and NIT's, I have tried to list some of them. Caution: This ranking is done on CSE and other Core Branches. Please keep branch in mind before deciding. - BITS Pilani (Pilani + Goa + Hyderabad) +IIIT Hyderabad (mecca of coders)
- BIT Mesra, Ranchi

Crack JEE Mains and JEE Advanced exam with good marks, so that you can secure a good rank. Then, you will surely get admission in IIT-Bombay.