Validation of certain proceedings and powers

Anything done or any action taken (including any order passed, notice issued or inquiry held) by any officer appointed or deemed to be appointed under any of the Tenancy Laws or the Land Revenue Code (not being an officer whose appointment is validated by section 3), in the exercise or purported exercise of any of the powers or functions conferred by or under the relevant Tenancy Law or the Land Revenue Code, at any time before the commencement of this Act, shall, notwithstanding anything contained in any judgment, decree or order of any court, be deemed to have been validly done or taken and shall not be called in question in any court or before any authority on the ground only that such officer was not duly appointed or had no jurisdiction to pass such order, issue such notice or hold such inquiry.