Can a state create its own All-India Service without the support of the Council of States?
No, a state cannot create its own All-India Service without the support of the Council of States. According to Article 312(1) of the Constitution: "Notwithstanding anything in Chapter VI of Part VI or Part XI, if the Council of States has declared by resolution supported by not less than two-thirds of the members present and voting that it is necessary or expedient in the national interest so to do, Parliament may by law provide for the creation of one or more all India services." This shows that creating an All-India Service requires the approval of the Council of States.