if I got better rank in open category than in ews category then can I go with rank in open category?
Hello
Yes sure. If your open rankgives you higher chances of getting a seat in your desired institiute then you can obviously go with your open rank.
At the time of counselling they will allot you seats on the basis of your open rank. If you want to use your quota rank then only they will allot you the seat based on your quota.
As ews category student can get a seat in the open category.