In the 11th Section of the Constitution, Articles 245 to 263 deal with the relations between the States and the Centre. Article 246 talks about the 3 lists for legislation.
The content of the 7th schedule is the three lists – Union List, State List, and the Concurrent List. On subjects mentioned in the Union List, the Parliament makes the Laws. It has 97 subjects. The most important subjects of the nation are in this list. The State List has subjects over which the States can make Laws. It has 66 subjects.
Over the subjects mentioned in the Concurrent List, both the Parliament and the State Assembly can make laws. It has 47 subjects. If any subject is not mentioned in the State List or Concurrent list, the Parliament will have the power to makes laws on that subject.
The main subjects in the Union List are: Defence, Armed Forces, Military Camps, the Fortresses of armed forces, arms and ammunition, nuclear energy, defence industry, Central Intelligence, Preventive Detention, Foreign Policy, Diplomacy, Treaties and Agreements, Possessions abroad, Exchange of criminals, Passport, Visa, Migration, Pilgrimage outside the country, crimes against international laws, Railway, National Highways, National waterways, Shipping and Navigation, Light Houses, Big ports, Naval hospitals, air traffic, movement of goods, Post, Telephone, Broadcasting, Public Debt, Currency and Coin making, Foreign loans, Reserve Bank, Post Office and so on.
Main items in the State List: Law and Order, Police, Jail, Local government, public health. Main items in the Concurrent list: Criminal Law, Criminal procedure, Marriage, divorce, etc.
