1. The document discusses various topics related to Indian history, mythology, science and technology. It contains multiple choice questions and answers about subjects like the Konark Sun Temple, Golconda, Voodoo religion, Agent Orange, and more.
2. Key people and events mentioned include Gandhari, Dhritarashtra and the Mahabharata, formation of the Indian National Congress, Ramakrishna Paramhansa and Swami Vivekananda, and Gulshan Kumar.
3. Places, objects and concepts defined include the Karmanasha river, Vantablack material, Ctrl+Alt+Del key combination, IKEA effect, and Dharmshala.