(a) Can a property owner sell his/her property by his/her own even she has given Power of Attorney to anyone else?
YES, HER OWNERSHIP RIGHTS REMAINS INTACT...
(b) Is the owner liable to give advance notice to the POA holder before and after execution of sale deed?
NOT MANDATORY............. she may intimate, if she wishes.
(c) Can a POA holder sue owner in respect of selling of agriculture land.
Under which clause/rule/act?
(Kindly refer recent judgement of Apex court invalidating any transer of property under GPA)