(b)Notwithstanding anything contained in Section 3, the [State] [Substituted by A.L.O. for the words 'His Majesty' .] Government may authorise any officer, not below the rank of Collector, to grant a licence to any person to sell petrol without admixture with power alcohol for use in any aircraft other than aircraft used by [the Indian] [Substituted by A.L.O. for the words 'His Majesty' .] naval, military or air forces, or for such purposes other than that of affording motive power for any motor vehicle as may be notified by the [State] [Substituted by A.L.O. for the words 'His Majesty' .] Government.