Explanation:

The Constitution of India has provided for a division of powers between the Central and state governments. Under the Seventh Schedule, there are three lists – the Union, State and Concurrent.

The Union List has a range of subjects under which the Parliament may make laws. This includes defence, foreign affairs, railways, banking, among others.
The State List lists subjects under which the legislature of a state may make laws. Public order, police, public health and sanitation; hospitals and dispensaries, betting and gambling are some of the subjects that come under the state.
The Concurrent List includes subjects that give powers to both the Centre and state governments. Subjects like Education including technical education, medical education and universities, population control and family planning, criminal law, prevention of cruelty to animals, protection of wildlife and animals, forests etc. However, given that there can be conflict when it comes to laws passed by Parliament and state legislatures on the same subject, the Constitution provides for a central law to override a state law