Land for sale

dear all, 

i have agriculture land in my village situated at madhya pradesh. On paper land is in name of my mother, but my mother is dead. and at present in mp govt records land shows three names, me and my two other sisters. presently we want sell our land of total  rs 1700000/-. so my question is, if the purchaser pay us cash and i deposit this amount in bank so what is tax liability for me?