Dear Student ,

First of all , you need to remember WBJEE admission through counselling is totally based on GMR / PMR , not on category ranks .

So, it will be fine if you have filled up the registration form as Gen Candidate as your admission will be based on General rank only .

But , for direct admission .. or decentralized Counselling  .. may be the college authority need OBC certificate if you tell them that you are a OBC candidate . It's better to contact with the specific college authority for detail information about direct admission .

Hope this helps !