(1) If the Central Government is satisfied that it is necessary or expedient so to do, it may, by notification amend the First Schedule, Fourth Schedule, Fifth Schedule, Sixth Schedule and Seventh Schedule by way of addition or deletion therein and upon such addition or deletion, the Schedules shall stand to have been amended accordingly.
    (2) If the appropriate Government is satisfied that it is necessary or expedient so to do, it may, by notification amend the Second Schedule and Third Schedule by way of addition therein and not otherwise, and upon such addition, the Schedules shall stand to have been amended accordingly.