A resolution passed by the Rajya Sabha under Article 249 of the Constitution, which authorizes the Parliament to legislate on a State List subject in the national interest, remains in force for a maximum period of:

Explanation

According to Article 249 of the Indian Constitution, if the Rajya Sabha passes a resolution supported by not less than two-thirds of the members present and voting that it is necessary in the national interest for Parliament to make laws on a state subject, such a resolution remains in force for a period not exceeding one year. It can, however, be extended for further periods of one year at a time by passing subsequent resolution in the same manner.