Government approval required for converting a public company into a private company; pending Tribunal applications remain on existing track. Any alteration effecting conversion of a public company into a private company is invalid unless approved by a Government order on an application in the prescribed form and manner; pending applications before the Tribunal at the commencement of the amending Ordinance must be disposed of by the Tribunal under the earlier applicable provisions, and the subsequent sub-section replaces the adjudicatory body's reference with a reference to the Government.