Question

If a new state of the indian union is to be created, which schedules of the constitution must be amended

Answer 1

If a new state of the Indian union is to be created, the 1st schedule of the constitution must be amended.

This is because there are 12 schedules of the Indian constitution and each of them deals with different aspects.

The first schedule of the Indian constitution deals with the lists of States and Union Territories of India so the 1st schedule of the constitution should be amended for creating a new State or Union Territory.

Answer 2

The Indian constitution's First Schedule should be amended because it enlists the existing states of India and union territories of India.  

New states can be included either by splitting or reorganizing an existing state, the inclusion of a new region or by changing the status of a union territory to state.

Article 2, 3, and 4 of the Indian constitution empowers the parliament to make changes accordingly in the First schedule to include a new state.