The correct answer is C. 1936.
Orissa was separated from Bihar on 1 April 1936. The Orissa State Act, 1936, was passed by the British Parliament on 11 December 1935 and came into effect on 1 April 1936. The Act created the new province of Orissa, which was carved out of the provinces of Bihar and Bengal. The capital of Orissa was initially Cuttack, but it was moved to Bhubaneswar in 1948.
The Orissa State Act, 1936, was a significant step in the history of Orissa. It marked the culmination of a long struggle by the people of Orissa for a separate state. The Act also led to the development of Orissa as a distinct cultural and political entity.
The following are the options for the question:
A. 1930: This is incorrect. Orissa was not separated from Bihar in 1930.
B. 1933: This is incorrect. Orissa was not separated from Bihar in 1933.
C. 1936: This is the correct answer. Orissa was separated from Bihar on 1 April 1936.
D. 1937: This is incorrect. Orissa was not separated from Bihar in 1937.