Explanation: The Government of India Act, 1919 introduced dyarchy for the executive at the level of the provincial government.

• Dyarchy, i.e., rule of two—executive councillors and popular ministers—was introduced. The governor was to be the executive head in the province.
• Subjects were divided into two lists: ‘reserved’ which included subjects such as law and order, finance, land revenue, irrigation, etc., and ‘transferred’ subjects such as education, health, local government, industry, agriculture, excise, etc.
• The reserved subjects were to be administered by the governor through his executive council of bureaucrats, and the transferred subjects were to be administered by ministers nominated from among the elected members of the legislative council.

Source: Spectrum Modern India