Aspirants can prepare for unforeseen questions in the interview by engaging in a variety of preparation strategies. They should enhance their current affairs knowledge and stay updated with significant national and international events. Practicing diverse interview scenarios with peers or mentors can also help familiarize candidates with unpredictable questions. Additionally, developing a habit of critical thinking enables candidates to articulate their thoughts clearly under pressure. Mock interviews are crucial, providing real-time feedback to improve confidence and adaptability, which are essential during actual interviews.