Dear Aspirant, Mop round is basically spot round. It will be held after successful completion of 3 rounds of e-counselling in WBJEE 2019. The vacant seats left behind will then be filled up through mop round. The West Bengal Joint Entrance Examinations Board is going to conduct online Mop-Up round of WBJEE Counselling 2019 from or after July 20. The purpose of the Mop-Up round is to minimize the remaining vacant seats after the completion of all the three rounds of WBJEE Counselling 2019. After the closing of the e-admission process , all the vacant seats excluding the management quota seats will be offered to the candidates who registered themselves for WBJEE Counselling 2019. All the reserved seats for SC/ST/OBC-A/OBC-B/PwD/JEE-M lying vacant after the WBJEE e-counselling 2019 will be converted to open seats. These vacant seats will be offered to the registered candidates on the basis of WBJEE 2019 General Merit Rank (GMR).The third round will end on 20July.So,it will be after that.

Hope this helps.