NIT

Getting admission in MNIT totally depends on your rank, reservation and branch. For getting seat in MNIT, you should score above 98 percentile for general category student. So, it depends on reservation category and you have scored 87 percentile which is good and you have good chances of getting seat in MNIT in some branches.

Assuming You have a rank ~40k to ~55k, It is Not possible in general category if you are aiming for top NITs or IIITs . You may have  limited options with lower branches but  not CSE and definately not best nit's. It is possible to get into some good NITs and IIITs if you are from a  sc (scheduled caste) or st(scheduled tribe.

With 77.92 percentile in JEE Main and SC category, your SC rank would be around 12k–15k.
Chances are low for top branches like CSE in NITs/IIITs, but possible in lesser-known ones.
You may get lower branches (like Mechanical, Civil, or Production) in newer NITs.
Some IIITs with newer campuses may also be within reach.
Participate in JoSAA counseling and also consider state counseling options for better chances.

With a JEE Main score of 53.06 and a SC category rank of 55137 in JEE Mains, securing admission in top NITs, IIITs, or GFTIs may be challenging. you better try other universities or private B.Tech colleges.

A JEE Main percentile of 74 is unlikely to secure admission to top tier National Institutes of Technology (NITs) or Indian Institutes of Information Technology (IIITs). 

Your friend is likely referring to the Study Grant offered by Lovely Professional University (LPU). Under this initiative, LPU provides a study grant of 1 Lacs per student to those who qualify the LPUNEST exam and secure admission to prestigious institutions such as IITs, NITs, IIMs, NLUs, IHMs, NIDs, and other government universities and colleges.

The tuition fees for BTech courses at NIT Kurukshetra are INR 5 lakh,  and the tuition fees for BTech at NIT Delhi are INR 5 Lacs too. Hence, the tuition fee is the same for both NITs. So, candidates can compare both of the institutes on different factors, such as cutoff, average placement package, seats, ranking of that particular institute, affiliation, accreditation, etc. Check out the closing rank for the BTech course in both institutes in the academic year 2024 and the average placement package in the table below:

Each year NIT Narula Institute of Technology achieves a solid placement performance that leads to the placement of 80-90% of its students. Students who received job offers at NIT Narula Institute of Technology earned the highest packages at INR 27 Lacs annually and the standard job amounts rested between INR 4-6 Lacs annually. The primary recruiters at NIT Narula Institute of Technology represent TCS, Wipro, Accenture and Infosys. The placement rate for Computer Science and Engineering students exceeds 90% in specific courses while their average annual packages typically fall between INR 5-6 Lacs per annum