Having known some people studying in both these institutions, I can say that KIIT is promising and is getting better every year. Thapar is a well-known and much older institute. You can choose either by preferring the college or the branch.

• If you are interested in studying mechanical engineering then go to Thapar. It has good placements for Mechanical. The faculty department is also decent.
• If you are more inclined towards coding go for CSE from KIIT. It is a more practical-oriented subject.
• If the interests do not lie in either and you just want a B.Tech degree and want to pursue higher studies or MBA, then go for CSE as that is the easiest among all the others. 
• It will be more practical-based learning, more industry-oriented and it has the best scope after graduation.

So you should decide your field of interest and what type of job or higher studies you would like to do and then opt for the branch that fits best for you.

Opt for any of these branches only if you are really interested in either of these branches or if you have plans of pursuing post-graduation in either of the subjects.

The reason behind this lies in whether you will be treating your technical graduation degree just as a simple graduation degree or are you really looking for it. If it is just going to be a simple graduation degree just like in campus placements, government job preparations, MBA entrance preparations, GRE preparations, etc., then it is not worth going for, because there is too much work in these branches.

If this is the case, choose any of the branches from CSE, IT, EI, and Civil Engineering. It will help you in saving a lot of time and hence, prepare well for entrances. Also, you can fully enjoy your college life.

One of my relatives pursued his graduation from the Coimbatore Institute of Technology. As per his experience, Mechanical Engineering will be a good option at CIT. Here are the following reasons why you should choose the Coimbatore Institute of Technology over PSG College of Technology.

Faculty: 

• The faculty of Coimbatore Institute of Technology is friendly, professional, and skilled.
• Many of its professors work in organizations like DRDO.

Infrastructure: 

• PSG College of Technology provides better infrastructure than Coimbatore, but there are many facilities available in CIT as well. 
• Coimbatore Institute of Technology provides good lab equipment and arrange workshops for engineering students. Workshops are very important to gain ample opportunity, which will boost your career.

Campus Life:

• The campus life of CIT is better. It provides a friendly environment for students. 
• However, the hostel and its food quality are low, but you will get used to it. 

Placement: 

• The placement cell of Coimbatore Institute of Technology is good. Companies such as L&T, Nissan, Renault, Hyundai, Godrej, Robert Bosch, and many more come for campus placement. 

The table below shows the placement statistics of both institutions:

Thus, choosing Mechanical Engineering over Automobile Engineering is always a better idea as it opens a wide range of opportunities before you. And Coimbatore Institute of Technology is the right choice for Mechanical Engineering.

NIT Arunachal Pradesh is among the top 200 engineering colleges in the country according to the NIRF Ranking of 2020. Ujjain Engineering College is an AICTE approved autonomous institute. Listed below are a few aspects to analyze both institutes:

NIT Arunachal Pradesh, Biotechnology:

Admission-

• Students are accepted for admission based on the JEE Main score and the prerequisite for the program is at least 75% in 10+2 academics.

• The closing cut-off ranking for the biotechnology program at NIT Arunachal Pradesh was 44,563 in 2019.

• The first year fee of the course is 2.2 Lakhs. However, students can also avail scholarships and other fee waivers.

Placements-

• The highest and average salary of the students at this campus is 11.68 LPA and 4.2 LPA respectively.

• The companies visiting the campus for the placement drive are Wipro, Research laboratories, Pharmaceutical companies, Intel, Infosys, Hyundai, Havells, NOKIA, Polaris, Ashok Leyland, Yodlee, Asahi India Glass, and many more.

Ujjain Engineering College, Mechanical engineering:

Admission-

• Like NIT Arunachal Pradesh, Ujjain Engineering college also accepts students based on the intermediate and 10+2 marks.

• The final selection is based on the performance of the students in JEE Main.

• The closing cut-off ranking of the home state and other states for Mechanical Engineering in 2019 was 140822 and 123322 respectively.

• The fee for this course is 99,404.

Placements-

• The highest and average salaries received by the students are 10 LPA and 3.5 LPA respectively.

• The companies visiting the campus are Uttam Galva Steel, Wipro, Intel, Infosys, Lupin, Yash Technologies, BYJU’S, TCS, and many more.

Biotechnology and Mechanical Engineering are two completely different subjects. You should choose the subject you are more passionate about and the institute according to that.