The post of Chief Minister of Jammu and Kashmir used to be called the Prime Minister of Jammu and Ka...........

Explanation:

The State of Jammu and Kashmir enjoyed a special but temporary autonomous status as mentioned in Part XXI of the Constitution of India. Among notable and visible differences with other states, till 1965, the head of state in Jammu and Kashmir was called Sadr-i-Riyasat (Head of State) whereas in other state, the title was Governor, and the head of government was called Prime Minister in place of Chief Minister in other states.