Who are the successor of a hindu lady after death, no will written...!

Estate devolves equally between who is alive.  Class 1 heirs include, widower, sons, daughters.  In absense of Class 1 heirs, class 2 heirs can claim.  Everyone get 1 share each. Equally.  Any will unregistered or registered can be challenged in court of law who have dispute regarding authenticity of will.

Hello Rahul first property divided in first class like lady first son or daughter which one have been alive  now and after than its goes to second class if there no one alive fro  first class than property divided to second class..... 

The question is not answered fully. Will the second wife and her son/daughter be ever successors to the property? I hope we will not have to consult Vikramaditya.