With a 2700 rank in IIT JAM EWS category, you have a good chance of getting admission into an MSc Chemistry program at several NITs like NIT Calicut, NIT Trichy, NIT Rourkela, NIT Patna, etc.

as the admission process for NITs mostly happens through the centralized counselling process (CCMN) based on your JAM score, and your EWS category will provide you with a significant advantage in terms of cut-offs; however, the specific NITs you can get into will depend on the individual institute's cut-offs and the overall competition for that year.

During counselling, carefully select the NITs based on your rank and preferred specializations.

Hope you have great life ahead...