In the case of any rule or order made by the Government under an authority conferred by this Act and requiring the public or a particular class of persons to perform some duty or act, or to conduct or order themselves or those under their control in a manner therein described, it shall be competent to any person interested to apply to the Government, to annul, reverse or alter the rule or order aforesaid on the ground of its being unlawful, oppressive or unreasonable.

(2)

After such an application as aforesaid and the rejection thereof wholly or in part or after the lapse of six months without an answer to such application or a decision thereon

published by the Government, it shall be competent to the person interested and deeming the rule or order contrary to law to institute a suit against the State for a declaration that the rule or order is unlawful either wholly or in part. The decision in such suit shall be subject to appeal; and a rule or order finally adjudged to be unlawful shall by the Government be annulled or reversed or so altered as to make it conformable to law.