(1) The State Government or such other authority or officer authorised by the State Government in this behalf, may if it considers it necessary in the public interest, by Notification in the Official Gazette, exempt, reduce or remit, whether prospectively or retrospectively, the tax payable in respect of any class of lands or buildings or by any class of persons. (2) The Government or the authority or officer referred to in sub-section (1) way at any time cancel or modify any order issued under sub-section (1) and upon such cancellation the tax shall be payable in respect of the land or building concerned with effect from the time when such cancellation is made: Provided that no such cancellation shall be made unless the party likely to be affected by such cancellation has had a reasonable opportunity of making his representations.