Hello Roshan,

According to Careers360, Both college have AAAA+ rating that means outstanding College. In terms of MSC. in Chemistry, You should go for MNNIT Allahabad. This is top engineering college of Uttar pradesh. MNNIT has also record for good Post Graduation records. MNNITs infrastructure for Post Graduation courses is better than VNIT Nagpur.

Good Luck.