The results are declared. As per the CBSE, candidates having any complaints with regard to discrepancies in the NEET 2017 Answer Key and wishing to challenge the same can notify the CBSE in online mode by providing supporting documents and paying a fee of Rs. 1000 for every question they wish to challenge.

It is over now.

You can know the details from gthe below link:

NEET_Answer Key Challenge

Hope this helps.