How to claim maintenance and ancestral property from father

My father is in BSF at Head Constable post. He left me and my mother in 2000 after 8 years of marriage. My grandfather died last year. I live in haryana with my maternal grandparents alongwith my mother. My grandmother, chacha and buaa(both married) live in Ahmedabad. My grandfather had property for sure(both ancestoral and self attained) but I doubt he had transferred it into the name of my grandmother or my chacha, to not let me get any single penny. Neither my mom nor I do any job. I am 20 year old wanted to do b.tech and in dire need of money. So can i claim any right to property from my geandmother or chacha? And also can i or my mother claim any property from my father's self acquired property now? Can i or my mother claim any maintenance from my father(salary about 30k/monthfor my studies? My mother already get a maintenance of 8k/month. My parents have also not divorced yet neither me and my mom wanted so.