It reads thus: "(2) The returning officer shall then examine the nomination papers and shall decide all objections which may be made to any nomination and may, either on such objection or on his own motion, after such summary inquiry, if any, as he thinks necessary, reject any nomination on any of the following grounds: (a) that on the date fixed for the scrutiny of nominations the candidate either is not qualified or is disqualified for being chosen to fill the seat under any of the following provisions that may be applicable, namely: Articles 84, 102, 173 and 191, of this Act and. . " 648 Under sub section (7), for the purposes of this Section, a certified copy of an entry in the electoral roll for the time being in force of a constituency shall be conclusive evidence of the fact that the person referred to in that entry is an elector for that constituency, unless it is proved that he is subject to a disqualification mentioned in Section 16 of the Representation of the People Act, 1950.