According to some of the people I know from BIT Mesra, it is not comparable to Thapar. You can compare BIT Mesra with reputed NITs like NIT Warangal or Trichy. 

Here are some important aspects of the institute. 

• Every engineering and management student looks for good placements in an institute. BIT Mesra will not disappoint you in that regard. It has a good placement record. 
• The academic environment at the campus is quite good. Now, if you are n IT/CSE student, then BIT Mesra will provide you a very competitive and learning coding culture.
• The college ensures good discipline among students. 
• After the compilation of your degree, you will be recognized as a student of one of the most reputed institutes in the country. 

The table below gives a brief comparison of the institutes. 

Going by the above points it is safe to say BIT Mesra has an edge over Thapar University.

I have a few friends from both Thapar University and LNM-IIT Jaipur and based on the reviews I got from them, I will say LNMIIT Jaipur will be a better option. Here are the reasons why.

• Batch Strength: The total number of students at LNMIIT is less than 600, so the competition will be less in this college. 
• Placements: The placement scenario of this college is excellent. Top companies like Microsoft, Amazon, Oyo, Uber visit the campus for placements. Samsung is a mass recruiter in this college and has offered packages of more than 13 lakhs per annum. According to the recent placement highlights the average and highest CTC offered to the students are 12 LPA and 58 LPA respectively. Students also perform well in off-campus placements. 
• Workshops: There are various kinds of workshops such as GSoC, mun, and many cultural and technical fests organized in the college. 
• Reservations: There are no reservations or state quotas for admission. 
• Coding Culture: The campus has a good coding culture. 

Hence, LNMIIT is a very good place to pursue CSE, but a college is just a medium and it completely depends on how you can utilize your 4 years in the college. Your success will depend on your hard work and efforts. 

You can refer to the complete procedure on the official website of Thapar Institute of Engineering & Technology University. Here’s what I gathered from one of my friends studying there. The admission process is pretty simple. 

• The university releases the application form for admission tentatively in the month of July. 
• It is advised that you ensure that you fulfill all of the eligibility criteria as per the guidelines of the university.
• Make sure that you fill out the application form as soon as possible to avoid any sort of inconvenience later in the admission process. 
• The University conducts a total of 3 rounds for admission. You are required to pay non-refundable counseling fees of INR 2,000. 
• The admission to the B.Tech is done on the basis of JEE Main score of the applicants. 

It is not necessary for candidates to submit the application form to get admission into the University. You can refer to the information available on the official website of the university to get updates regarding the important dates of the admission process.

ECE at Thapar University is more Hardware orientated. You may find yourself dealing with semiconductors for about 3 to 3.5 years. In addition to this, will be the onslaught of programming languages and a little portion of database and networking. 

In case you opt for the Computer Science program, you'll notice that it is purely software-oriented and has a lot more on programming languages, architectures, databases,, and networking.

ECE is the 2nd best option after CSE as its cut-off is just below it. This year, cut off score for ECE is as listed below:

As for placements, some well-known companies which visit for recruitment, are Texas Instruments, Whirlpool India, TCS, HP, Larsen and Toubro, ST Electronics, Philips, Mu Electronics India, and others. The placement rate is an amazing 99% for most of the departments. The highest package offered this year is 43 LPA and a total of 970 students got placed.

One of my friends graduated from Thapar University. According to his experience, there is no harm in attending the orientation classes

Orientation classes are held for the first-year students before the start of the academic session. They are not necessary to attend. But there is no harm if you attend them, in fact, it is of great help and a good fresh starter.

They get you to know information about the grading system of Thapar University. You get guidance about the do’s and don'ts regarding the attendance and the qualifying criteria, etc.

Apart from the academic schedule, there are guest lectures by the director, senior faculty, and by the deans. Hence, it is better if you attend the orientation session.

Due to the increased student intake, the cut-offs for COE went down to 100 marks for Punjab and 130 marks for outside Punjab candidates, in the last few years. Here is the cutoff trend for COE.

As the seats are increasing, there is a probability that the cut-offs might decline further. The cut-off will be around 90 marks for Punjab and 115 marks for outside Punjab candidates.

It will be better to attend the spot counseling irrespective of your chance of admission as it is uncertain. You might be lucky to get your favorite branch at Thapar.