The Supreme Court of India has the original jurisdiction to settle disputes between the Union and the States.
It can declare a law as unconstitutional, if it contravenes any provision of the Constitution.
In spite of the fact that the Indian Constitution establishes a federal structure, it is indeed very difficult to put the Indian Constitution in the category of a true federation.
In other words, Governor is the agent of the Centre in the States.
The working of Indian federal system clearly reveals that the Governor has acted more as centre’s representative than as the head of the State.
In Indian constitution the powers of state and centre are clearly defined and there are very clear limits of both the centre and the state for law making powers. The State List consists of 66 subjects of local interest such as Public Health, Police etc.
As such amendments can only be made by the Union Parliament.All India Services such as IAS and IPS have been created which are kept under the control of the Union.
The Constitution of India has adopted federal features; though it does not, in fact, claim that it establishes a federation.Such an amendment has to be passed by majority of total members of each house of the Parliament as well as by two-thirds majority of the members present and voting there in.However, in addition to this process, some amendments must be approved by at least 50% of the states.The federation is a union because it is indestructible and helps to maintain the unity of the country.Art 155 and 156 provide that the Governor, who is the constitutional head of a State, is to be appointed by the President and stays only until the pleasure of the President The Centre may take over the administration of the State on the recommendations of the Governor or otherwise.Supremacy of judiciary is another very important feature of a federal state where there is an independent judiciary to interpret the Constitution and to maintain its sanctity.