On what date did the amendments made by the Constitution (Seventh Amendment) Act, 1956 come into effect?
The amendments made by the Constitution (Seventh Amendment) Act, 1956 came into effect on 1st November, 1956. This can be inferred from Section 2(b), which states that "the said executive power of each State shall, in so far as such trade or business or such purpose is not one with respect to which the State Legislature may make laws, be subject to legislation by Parliament." The act was passed on 15th August, 1956 and came into effect on 1st November, 1956.