Article 31 of the Constitution as amended by the Constitution (Fourth Amendment) Act, 1955, provides, inter alia, that a law for compulsory acquisition of property for public purposes shall not be called in question in any court on the ground that the compensation provided by that law is not adequate, and by article 31 A which was substituted by the Constitution (Fourth Amendment) Act, 1955, for the original Article with retrospective effect, it is provided that notwithstanding anything contained in article 13, no law providing for (a) the acquisition by the State of any estate or of any rights therein or the extinguishment or modification of any such rights. shall be deemed to have become void on the ground that it is inconsistent with or takes away or abridges any of the fundamental rights con ferred by article 14, 19 or 31; provided that where such law is made by the Legislature of a State, the provisions of the Article shall not apply thereto unless the law, having been reserved for the consideration of the President, has received his assent.