In the battle of Chinhat during the 1857 Revolt, the rebel who fought against the British was Ahmadullah Shah. He was a fierce fighter and played a significant role in the revolt.

Option 1 - Ahmadullah Shah: This is the correct answer as mentioned in the question. Ahmadullah Shah was a prominent rebel leader during the 1857 Revolt and took part in the battle of Chinhat against the British forces.

Option 2 - Shah Mai: There is no historical evidence or reference to suggest that Shah Mai was involved in the battle of Chinhat or the 1857 Revolt. This option is incorrect.

Option 3 - Mangal Pandey: Mangal Pandey was a notable figure in the 1857 Revolt and played a significant role in the uprising in Barrackpore. However, there is no mention of his involvement in the battle of Chinhat. This option is incorrect.

Option 4 - Kunwar Singh: Kunwar Singh was a rebel leader from Bihar and played a crucial role in the revolt. However, there is no evidence or reference to suggest that he fought in the battle of Chinhat. This option is incorrect.

In conclusion, Ahmadullah Shah is the correct answer as he fought against the British in