After the revolt of 1857, which of the following changes were NOT introduced by the British Government in India?

Proportion of India Soldiers in the British army were increased

The correct answer is Option 2- Proportion of India Soldiers in the British army were increased

Here's why the other options were introduced:

Secretary of State for India: This position was created to oversee Indian affairs directly under the British Crown.
Powers transferred to Crown: The British East India Company's rule was dissolved, and the British government took direct control of India.
Viceroy of India: The Governor-General's title was changed to Viceroy to signify the authority of the British monarch.

Therefore, the answer is: Proportion of India Soldiers in the British army were increased