How to claim property rights as alimony in divorce proceedings

Hi! A colleague of mine is expecting a divorce and would be proceeding with the leagalities soon.its a bitter case and the wife has threatened to take all away from him.He has a salary of around 25-30k and has a house which is in the name of his grandmother.As the father is no more and he only has a mother and 2 married sisters. As per the law can the wife claim the right on the house for a divorce alimony? As I have heard that the grandparents property is automatically in the grandson's name And as his mother is still there so does she have a right on the house first or is it her son ? Please help as it will be easier to sought his finances if this can be answered. Also will it be possible for him to name the property in mother's name before the case starts? He is a hindu