(1) The Chief Commissioner may, on an application for revision made to him or otherwise, call for the record of any proceeding pending before, or disposed of by, the competent authority or the Deputy Commissioner or any officer authorised by the Chief Commissioner under sub-section (2) of section 9.
     (2) No order varying the decision of the competent authority or the Deputy Commissioner or revising the list published under section 9 which prejudicially affects any person shall be made without giving him an opportunity of being heard.