Hey Biky,

Your SC rank 2268 is good comparatively. There is high chance for you to get admission into INDIAN INSTITUTE OF TECHNOLOGY,  KHARAGPUR for M.Sc in Chemistry as you have SC quota( not 100% chance) according to last year's cutoff 

Last year Cutoff

Female Gender

Open : 6620     Close : 6620

Gender Neutral 

Open : 2128     Close : 2258

Hope it helps