Sir I appeared in UPSEE exam and I got 280 no. And 10440general rank. If I apply for E. W. S. category on counselling, what is my rank

If you apply for EWS category your general rank will remain same . But you will get some benefits due to in EWS category. So based on your rank you can get certain government college:
1. Chhatrapati Shahu Ji Maharaj University Kanpur
2. Bundelkhand University Jhansi
3. Lucknow University
You can also apply for private Colleges:
1. Inderprastha Engineering College Ghaziabad
2. Krishna Engineering College Ghaziabad
3. IIMT Engineering College Greater Noida
4. ITS Engineering College Greater Noida
These are the Colleges where you can get admission based on your rank. So go through these Colleges by visiting their respective websites.