Constitution of India, 1949
(1) The chief Minister shall be appointed by the Governor and the other Ministers shall be appointed by the Governor on the advice of the Chief Minister, and the Ministers shall hold office during the pleasure of the Governor:
Provided that in the State of Bihar, Madhya Pradesh and Orissa, there shall be a Minister in charge of tribal welfare who may in addition be in charge of the welfare of the Scheduled Castes and backward classes or any other work.
(2) The Council of Ministers shall be collectively responsible to the Legislative Assembly of the State.
(3) Before a Minister enters upon his office, the Governor shall administer so him the oaths of office and of secrecy according to the forms set out for the purpose in the Third Schedule.
(4) A Minister who for any period of six consecutive months is not a member of the Legislature of the State shall at the expiration of that period cease to be a Minister.
(5) The salaries and allowances of Ministers shall be such as the Legislature of the State may from time to time by law determine and, until the Legislature of the State so determines, shall be as specified in the Second Schedule.