Hello the Nmms haryana 2018-19 exam is over, it is completed on November 18, 2018 and the official key is also released by the organising board. So you can find the key here. To download the answer key click the below link. 

https://files.aglasem.com/view/?link=//drive.google.com/file/d/1J4s7PzkshJynEkRrhNoB5qHVxLJBsmy6/preview&title=NMMS+Examination+Answer+key+held+on+18+Nov+2018

Also result will be delivered soon.