(1) Save as otherwise expressly provided in these Rules, every authority, officer or person who makes any order in writing in pursuance of any of these Rules shall, in the case of an order of a general nature or affecting a class of persons, publish notice of such order in such manner as may, in the opinion of such authority, officer or person, be best adapted for informing persons whom the order concerns, in the case of an order affecting an individual corporation or firm serve or cause the order to be served in the manner provided for the service of a summons in rule 2 of Order XXIX or rule 3 of Order XXX as the case may be in the First Schedule to the Code of Civil Procedure, 1908 (V of 1908), and in the case of an 830 order affecting an individual person (not being a corporation or firm) serve or cause the order to be served on that person (i) personally, by delivering or tendering to him the order, or (ii) by post, or (iii)where the person cannot be found, by leaving an authentic copy of the order with some adult male member of his family or by affixing such copy to some conspicuous, part of the premises in which he is known to have, last resided or carried on business or personally worked for gain.