Best Website to Practice NISM Mock Tests for Free?
First, let me commend you on taking on such a dope challenge that is the NISM cert. exam. The best AND free website that I am familiar with is of the Financial Institute of Financial Markets.
Below, I have provided you with the link to their NISM section that is composed of 16 different series of mock exams for a variety of nitches. You can go in and read the description for each and choose where you will want to start!
I wish you the best of luck!