Who gets the money from PPF Account n Bank FD

My father n mother got separated after 20 years of marriage. I am the only child from the marriage. They never went to court for divorce n both of them were never remarried again. My father passed away without leaving a will. He has made my uncle kids as nominee in PPF account n Bank FD I want to ask do I have any right on that money n who is entitled to get the money from the PPF account if the legal hier n nominee are different. We belong to Hindu religion