(1) India, that is Bharat, shall be a Union of States.
1(2) The States and the territories thereof shall be as specified in the First Schedule. The territory of India shall comprise— (a) the territories of the States;
2(b) the Union territories specified in the First Schedule; and such other territories as may be acquired.
Article 1 of Indian constitution deals with the territory of India. This article says what is India all about. As per this article, India consists of all the states as well as Union Territories. The name of all the states as well as Union Territories is mentioned in the First Schedule of the Indian Constitution.
Article 1 of Indian constitution also says that India is the Union of States this means no states have the right to secede from India. The country has been divided into different states and Union Territory for the convenience of administration and governance.