Union Public Service Commission Member, Alka Sirohi will perform the duties of Commission's Chairman from 21st of this month, an official release said.<br/><br/>Her appointment is till further orders or till completion of her term as Member on January 3, next year, whichever is earlier.<br/><br/>The post of the UPSC Chairman will fall vacant on 20th of this month, consequent upon demitting of office by Mr Deepak Gupta on attaining 65 years of age.<br/><br/>