Explanation:

Appointment of the CM -

The Constitution does not contain any specific procedure for the selection and appointment of the Chief Minister.Article 164 says only that the Chief Minister shall be appointed by the Governor.But in accordance with the conventions of the parliamentary system of government, the Governor has to appoint the leader of the majority party in the legislative assembly as the Chief Minister.However, when no party has a clear majority in the legislative assembly, then the Governor may exercise his personal discretion in the selection and appointment of the Chief Minister.

Constitution does not require that a person must prove his majority in the legislative assembly before he is appointed as the CM.The Governor may first appoint him the Chief Minister and then ask him to prove his majority in the assembly within a reasonable period.The CM may be a member of any of the two Houses of state legislature.

Article 154 deals with executive power of Governor.

(1) The executive power of the State shall be vested in the Governor and shall be exercised by him either directly or through officers subordinate to him in accordance with this Constitution.

(2) Nothing in this article shall—

(a) be deemed to transfer to the Governor any functions conferred by any existing law on any other authority; or

(b) prevent Parliament or the Legislature of the State from conferring by law functions on any authority subordinate to the Governor.