Which one is better for a B.Tech, LNMIIT Jaipur or MNIT Jaipur?

It's highly illogical to compare an institute of national importance namely MNIT Jaipur to an average engineering college in the same city, LNMIIT Jaipur. Here are some key differences between the institutes

• Campus: MNIT Jaipur has a bigger campus that spreads across 320 acres while LNMIIT operates from just a 100-acre campus area with limited facilities.
• Location: MBIT Jaipur is located in the heart of the city of Jaipur while LNMIIT is located far away from the city. MNIT students have better access to coaching, hospitals, malls, and other places to hang out.
• Faculty: MNIT Jaipur is one of the top 5 NITs so definitely has better experienced and learned professors than LNMIIT. 
• Placements: MNIT Jaipur is way better than LNMIIT in terms of placements. Its average package stood around INR 12.43 LPA with many big shots like Adverb, Adobe, Airtel, Amazon, Analytics Quotient (Kantar), and Apple, visiting the campus for placements.
• Higher studies: MNIT because of its excellent brand name offers excellent opportunities for pursuing higher studies. In fact, many MNIT alumni are currently pursuing MBAs from top B Schools like IIM, IIFT, XLRI, and FMS 
• Alumni: MNIT Jaipur was established in 1963 whereas LNMIIT was established in 2003. The former has a stronger alumni base working as directors in many government organizations and PSUs. Some even joined , private firms or became IAS, IPS, IFS, etc 
• Fees: MNIT Jaipur BTech one year fee is around INR 1.78 Lakhs while LNMIIT Jaipur BTech one year fee is INR 3.75 Lakhs. MBIT has much lower fees and therefore offers a better ROI than LNMIIT Jaipur.

It’s safe to conclude that MNIT Jaipur is incomparable to LNMIIT in any way and ranks better than LNMIIT.