Well, it depends upon several factors. A few of them are as mentioned below.

• Where you possibly imagine yourself in the next 10 years and more?
• What has been the real motivation behind your aim for pursuing engineering? 
• What is the time period you are willing to assign for reaching your goal?

There are other factors, or possible scenarios, such as,

• Cushy CTC: In this case, CSE will be better than Mechanical Engineering.
• Higher studies abroad: CSE and Mech both will offer similar opportunities. 
• Competitive examination: In case you would want to take the UPSC examination, IES, PSU, or several others, choosing Mechanical will be better as compared to CSE.
• MBA from IIM: With regard to that, being a student from the mechanical department can give you an edge. As it will offer you diversity points. If however, your scores are low, then you will lose the edge.
• Work destination: If you want to work in Gulf in the future, then choosing Mech is better. If you dream of working in the US, CSE offers better options. 
• If you have a natural affinity towards automobiles then go for Mechanical Engineering. 

The above scenarios can give you possible average outcomes, but there can be vague contradictions as well. You also need to consider which subject interests you. 

According to various student reviews, the preference order for CSE and Mechanical is MNNIT > NITJ. You should always give preference to the branch rather than the institute. Hope this clarifies most of your doubts.

To compare two institutes, you need to consider various factors. A few of such parameters are briefed below. 

• Placements Statistics 
• Academics
• Alumni Strength
• Cutoff Required
• Also for CSE, coding Culture

If we compare MNNIT Allahabad and VNIT Nagpur based on these parameters, MNNIT comes ahead, although marginally. 

Here is a brief overview of the CSE program offered by the two institutes.

Other than that, you can also choose a college which is closer to your hometown, if necessary. That way you can save valuable travel time and visit home during holidays. 

The scores are subject to change per year for admission criteria. However, in a nutshell, your selection also depends upon the choice of the branch you have for a B.Tech course and in which category do you actually belong to. 

For instance, my cousin’s brother is from the general category and had acquired 228 marks in JEE Mains 2015. Besides, he also had 94.4 percent of marks in his CBSE board examinations. His rank was 3828 and he got admission to the CSE branch. His 10+2 score affected his ranking. 

However, currently, the 10+2 score does not matter that much for admission. A total of 180 and out of 360 will be a safe rank for taking admission. If you are applying for CSE, you need to work a little hard as the cutoff is more for the branch. 

Here is the recent cutoff requirement for MNNIT Allahabad. 

Hope this clarifies your doubts.

Among the colleges, choosing NIT Calicut for CSE will be a better option. The faculty of NIT Calicut is very talented and knowledgeable in their fields. They are very good at explaining the concepts and are also humble and helpful in nature.

The placements of this college are amazing. There are better companies visiting the campus for placements as compared to NIT Allahabad. There are a lot of other opportunities available too, especially for CS students. Here is a brief placement highlight for NIT Calicut.

• Average CTC - 11 LPA 
• Highest CTC - 43 LPA 
• Top recruiters - Deloitte, Intel, TATA group, etc.

If you want to pursue CSE, then NIT Calicut will be a very good college for you as the facilities for CSE are top-notch. You will also get good placement opportunities. 

This totally depends on your choices and interests. As the college administration is unknown towards your logical mind in doing computer programming all day or managing a manufacturing unit.

If you choose Mechanical Engineering as a branch, it is far better than Computers, where the second one is more subjective than the first one. For this reason, you can easily become an expert in computer programming, and it is not so easy to become a mechanical engineering expert.

But if you are interested in mechanical, or want to appear in IES after completing the BTech degree, then studying mechanical from MNNIT will be the best decision for you.

Besides, if you want to take Computer Science to be settled in top MNCs, studying CSE in PEC will be the best decision for you, rather than studying it in NIT K.