Hey santosh!

Mop up round is the round of offline counselling process provided by the respective states, against the reverted seats from All India 15% Quota. It can also be called as the second last step for NEET Admission. The seats that remain vacant after 1st and 2nd round counselling are filled by the Mop up round for NEET UG.  

The fresh registrations for mop up round will begin from august 13,2019 to August 15 ,2019. And the allotment results will be out on august 18,2019.

To know more about mop up round   , follow the given link:

https://medicine.careers360.com/articles/neet-counselling

Hope it helps!