Explanation:

This dual scheme of governance was known as ‘dyarchy’- a term derived from the Greek word dyarchy which means double rule. It was introduced in India through the Government of India Act of 1919 which divided the provincial subjects into two parts- transferred and reserved. The transferred subjects

were to be administered by the governor with the aid of ministers responsible to the legislative Council. The reserved subjects, on the other hand, were to be administered by the governor and his executive council without being responsible to the legislative Council.

The Government of India Act of 1935 abolished dyarchy in the provinces and introduced ‘provincial autonomy’ in its place. The provinces were allowed to work as autonomous units and administration in their defined spheres. It provided for the adoption of dyarchy at the Centre. However, this provision of the Act did not come into operation at all. This act provided for the establishment of a Federal Court which was set up in 1937.

The proposal for setting up of the federation of India didn't materialize because the act proposed that federation could come into existence only if as many princely state ( which had been given option to join or not to join ) were entitled to one states seats in the upper house of the federal legislature. due to this , central government in India continued to be governed by the provision of the act 1919. however some parts of the GOI Act 1935 came into force for example : the federal bank (the reserve bank of India) and the  Federal court were established in 1935 and 1937 respectively. the other parts of the Act, particularly Autonomy came into force on 1st April 1937. the first election under the act were also held in 1937.