How much rank we should get in jeemain to get seati iiit in ews category

Hello Mustaq,
Last year, the closing rank for any IIIT for general category was around 30k. So, this year also the closing ranks would be approximately be same for general category. Now, since, EWS category is introduced newly this year, any exact predictions can't be made for the same. However, you can expect that around 50k general rank would get into IIIT, if you have EWS category. For more precise college predictions on the basis of ranks, use college predictor:
https://engineering.careers360.com/articles/jee-main-college-predictor
All the best!