Answer : 4. "जय दयाल और मेहराब खां"
Explanation :

1. The rebel forces of Kota rebelled under the leadership of two officers Mehrab Khan and Jaidayal Kayashi.

2. Lala Jaidayal was a famous revolutionary of the first Indian freedom struggle of 1857.

3. On 15 October 1857, Kota led a revolution against the British in the state.

4. Major Burton died in this and the Residency was captured by the revolutionaries.

5. On 17 September 1860, Lala Jaidayal and Mehrab Khan were hanged by the Kota Agency at the same place where they had murdered Major Burton.