How does this Constitution define the scope of executive power for each state?
The Constitution defines the scope of executive power for each state as follows:

1. The executive power referred to in sub-clause (a) shall not extend to matters with respect to which the State Legislature has power to make laws, except as expressly provided in this Constitution or by any law made by Parliament.
2. Until otherwise provided by Parliament, a State and any officer or authority of a State may continue to exercise executive power or functions in matters with respect to which Parliament has power to make laws for that State, as they could before the commencement of this Constitution.