What are the constitutional provisions related to reorganization of states?

Article 3 enables Parliament to effect by law reorganization inter se of the territories of the States constituting the Indian Union. Parliament is empowered or enact law to reorganize the existing States by establishing new States, or by uniting two or more States or parts of States, or by uniting any territory to a part of any State; or by altering their boundaries, or by separating territory from, or increasing or diminishing the area of, or by changing the name of, a State. The power of Parliament is exclusive and plenary. That is why it has been said that “India is an indestructible Union of destructible units”.