What are Residuary Subjects

What are residuary subjects?

The subjects that are not included in the lists stated in the constitutions are termed as residuary subjects. Residuary power refers to the right of making laws on such subjects which are listed as residuary subjects. These subjects can be legislated by only the Union Government and the same is stated in the Constitution as well. 

These subjects are basically those subjects which came into existence after the constitution was written. For example: computer software, information technology, and space technology. All these things came once the constitution was written. So, all these kinds of subjects are added in residuary subjects.