Choose the course that interests you, college is a secondary thing. Here are some of the facts that may help you in choosing the right branch for you.

• If you want to work in PSUs or Govt. sectors, it’s better to not choose Production Engineering as there are fewer recruiters.
• Jadavpur is the best college you can get through WBJEE. If you choose Production or Power in JU, you will have good on-campus job opportunities.
• Production Engineering is a branch of Mechanical Engineering itself. The syllabus will be more or less the same. 
• Mechanical at Kalyani University will be slightly better than Jalpaiguri. You may not get lucrative job packages at on-campus placement from Kalyani University but in the long run, you will have a much better hold with your Mechanical degree. You can expect well-paid jobs in the future. 

Your future will depend on the branch you are choosing so choose according to your interest. All these Universities will offer you enough opportunities and resources to prosper. It’s up to you to use that well. 

Both Metallurgy at NIT Jamshedpur and IT at Jadavpur University seem to be good options so the choice really depends on your preferences. I hope you aren't someone who is obsessed with tags because, in the long run, the tag of your college does not even matter. Moreover, both NIT Jamshedpur and Jadavpur University have a considerably good reputation in the industry. However, it's true that Nit Jamshedpur metallurgy placements are slightly better than JU metallurgy placements because of their favorable location. JU IT placements are decent too with many 20_ LPA offers. Here is why I will suggest you go for JU IT instead of NIT Jamshedpur Metallurgy

• Metal processing units are not very favorable working places if you are considering getting employed after graduation.
• JU has a good record of students opting for higher studies from all departments every year.
• JU is ranked 6th in India in research after IISC and other top IITs. Its professors have collaborations with foreign universities and their Letters of Recommendation carry great value.
• Location-ise Kolkata is a much better place than Jamshedpur.

Additionally, consider the following table before making the final choice.

Hope this helps you make the right decision.

Both Jadavpur University and ISM Dhanbad are reputed institutes. ISM was already quite reputed across India and after getting the IIT tag, the institute has improved quite significantly. 

• If you are getting branches like CSE/ECE at JU and offbeat branches at IIT ISM, then you should definitely choose JU. 
• Another advantage of choosing JU is the negligible fee. For a 4 year long B.Tech you will need to pay only around 10,000. 

So, take these factors into consideration, and choose according to your convenience.

Jadavpur University, NIT Surathkal, and NIT Warangal all of these institutes are well reputed and offer quality education. Below mentioned are certain points that can be kept in mind while choosing a college between these three.

Ranking:

IT at Jadavpur University:

There are a total of 8 teachers with PhDs or D.Sc. and a total of 12 teachers with a master’s degree for the department.

• Admission is done on the basis of the rank obtained in WBJEE.
• In 2019 the closing cutoff for IT was 183.

The total number of seats that are offered in B.E (information technology) is 65. There are a total of 9 mid-range servers in the programming laboratory, in the software engineering laboratory there are 120 desktops present.

Placements:

In the year 2015-2016 Jadavpur university had the best placement records as compared to the other departments in the college. The average CTC received by the students of IT was 12.34 LPA.

Chemical Engineering at NIT Surathkal:

In the chemical engineering department, there are 16 teachers that teach the students.

• The admission to this college is done on the JEE marks.
• In 2019 the closing cutoff for Chemical Engineering was 13820 (other states) and 17679 (home state).

College provides its students with the best infrastructure that is required to pursue a chemical engineering course.

Placement:

• The average placement in 2019 was 4 LPA.
• The Highest CTC received by the students was 49 LPA.

Chemical Engineering in NIT Warangal:

NIT Warangal is popular due to its extensive and rigorous teaching and also it has an extensive placement record.

• Admission is done through the JOSAA counseling, also the marks obtained in JEE mains.
• For Chemical Engineering the closing JEE cutoff for 2019 was 14401.

Placement:

• The average package offered was 6.15 LPA and the highest package was 15 LPA.
• The top recruiters that visit the college include GSK, Walmart, Verizon, JSW L&T, DLF, Punj Llyod, Aditya Birla Group.

These are the things that need to be considered while choosing between these three institutes, as for which choice will be better for you, you should be the one to decide that.