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.
The Supreme Court of India has the original jurisdiction to settle disputes between the Union and the States.
After this procedure the amendment is signed by the head of the state i.e; the President.
And both the union government and the central government derive their powers from the constitution.: The constitution of India is a rigid constitution and this is one of the basic features of federal constitution.
The federal polity, in other words, provides a constitutional device for bringing unity in diversity and for the achievement of common national goals. A federal government exists when the powers of the government for a community are divided substantially according to a principle that there is a single independent authority for the whole area in respect of some matters and there are independent regional authorities for other matters, each set of authorities being co-ordinate to and subordinate to the others within its own sphere.
The Constitution of India has adopted federal features; though it does not, in fact, claim that it establishes a federation.
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.