No person or officer shall wilfully or corruptly by himself or in co-operation with one or more other persons, defeat, deceive or obstruct any person in respect to his right of examination, or corruptly or falsely mark, grade, estimate or report upon the examination or proper standing of any person examined hereunder or aid in so doing, or wilfully or corruptly make any false representation concerning the same, or concerning the person examined, or wilfully or corruptly furnish to any person any special or secret information for the purpose of either improving or injuring the prospects or chances of any person so examined, or to be examined, being appointed, employed or promoted.