All the three colleges are good. However, according to me, NIT JSR and BIT Mesra are better than NIT Agartala. For a core Engineering branch though, NIT JSR is a better choice over BIT Mesra. So your preference order for Civil should be NIT JSR> BIT Mesra> NIT Agartala.

Here are a few comparison points between NIT JSR and BIT Mesra to helTithi agp you choose between the two-

1. Academic Infrastructure- The infrastructure at BIT Mesra is better than NIT JSR. However, NIT JSR has a new academic building and the old academic building underwent renovation some time back.
2. Hostel Infrastructure- The hostel infrastructure of NIT JSR is much superior with the rooms and galleries in very good condition.
3. Placements- For core branches, the placements are a bit better at NIT JSR.
4. The teacher-student ratio is better at BIT Mesra.
5. BIT Mesra is a private college, so the maintenance of campus, classrooms, etc. is much better. However, its semester fees are much higher than NIT JSR.
6. NIT JSR carries the ‘NIT’ tag which holds value if you go for your higher studies, and may also open more job opportunities for you.
7. For CAT, UPSC, IES, GATE, etc. aspirants, NIT JSR has a lesser attendance pressure and allows more free time that you can then use for your preparation.
8. Curriculum load- The curriculum load is more at BIT Mesra than NIT JSR.
9. The girls:boys student ratio is better at BIT Mesra.
10. The study environment is almost the same at both.

BIT Mesra is a better option for CSE. However, for a core branch, NIT JSR is a better choice. My brother chose Civil at NIT JSR over Civil at BIT Mesra and he did not regret his decision. Also, never choose an institution based off of NIRF rankings because they consider many factors, and many of them are irrelevant for you.

For Civil Engineering, IIT Roorkee is a much better option than other IITs. Before I tell you why, here is a bit about IIT Roorkee’s history. Established in 1847, IIT Roorkee was the first Asian Engineering initially known as College Thomason College of Civil Engineering. Here are a few points pertaining to its civil Engineering program

• Civil Engineering is one of the best core departments of IIT Roorkee. 
• The placements are decent with a plethora of job opportunities 
• IIT Roorkee has state-of-the-art labs that are massive and equipped with the latest facilities. 
• The Civil Engineering Department is the parent to many subdomains like Earthquake Engineering Department in India.
• IIT Roorkee has numerous Foreign and International Collaborations with many eminent personalities visiting the campus frequently.
• Several Student Exchange Programs from foreign universities are offered to facilitate international exposure
• CSIR-CBRI is present inside the campus to coordinate with the Civil department to provide an excellent research environment. 
• The civil engineering branch has an extensive alumni pool comprising many flag bearers of the institute like Sir James Thomason( constructor of Ganga Canal ), Sir Ganga Ram, Lawrence William Durell (constructor of Darjeeling Mountain railway), Ajudhia Nath Khosla ( builder of Bhakra-Nangal Dam and Hirakud Dam), Jai Krishna( eminent Earthquake Engineer), to the present Prashant Rao and Mangu Singh ( Director & MD of Delhi Metro Railway Corporation ), etc

These points prove rightly that the Civil Engineering department of IIT Roorkee is the best you can find in the whole of Asia.

Both IIT Patna and IIT Bombay are well-reputed institutes in India. The CSE department is renowned for its experienced faculty, rich alumni network, best placement support, and effective classes. The courses in the Computer Science and Electronics department include compilers, machine learning, computer learning, artificial intelligence, natural language processing, and so on. Students are given both theoretical and practical knowledge. IIT Patna also has club support from the CSE field, namely NJ GATH, and Robotics. The students can effectively explore their ideas in this respective field in an innovative way. The alumni network of the CSE department is fabulous, as they give much support to the students in their studies. The opportunities are far better in the CS field than in civil engineering. So you can opt for IIT Patna.

I would never recommend you to go for any core branch at new IITs. With the new IIT tag, ISM Dhanbad is a far better option as it was established in 1926 and enjoys global recognition in contrast to IIT Hyderabad, which is still under development. Both the colleges are poles apart in terms of infrastructure, facilities, etc.

The table below shows a head-on comparison of the placement scenario at both the institutes:

There are several things you should consider while comparing these branches.

During 2023 placements, 97.29% of students were placed in the Civil branch. Metallurgy students received 100% placements while production students received 97.61% placements. 

The salary package stats for these branches are as described below- 

Out of the three, Metallurgy has the highest placement percentage.

TATA Steel offers good placements to Metallurgy students of NIT Jamshedpur. Other than them, Vedanta, Jindal Steel, Hindalco, and Tata Metaliks are some other companies that offer placements to Metallurgy students of NIT Jamshedpur.

Metallurgy is a good choice for higher studies. Many students from this branch perform really well in GATE exams.

I recommend you consider joining Metallurgy at NIT Jamshedpur because it offers good future prospects. However, also talk to some seniors from the other branches before making a final decision.