Explanation

Mir Osman Ali Khan was the last Nizam of Hyderabad.

He ruling from 1911 until the annexation of Hyderabad by India in 1948.

1st Nizam: Mir Qamar-ud-Din Siddiqi (Nizam-ul-Mulk) – 1724 to 1748.

2nd Nizam: Mir Nizam Ali Pasha – 1748 to 1803.

3rd Nizam: Mir Akbar Ali Pasha – 1803 to 1829.