Within 2 minutes interviewer wants to check your presence of mind and your confidence while delivering information about the topic. The topic chosen must be either related to the company and it's upcoming projects or talk about yourself i.e. your hobbies which shows your dedication towards that work.
How can I speak on any topic?
Delivering Impromptu Remarks. Ask for a moment to organize your thoughts. In formal speech and debate, you're allowed a limited amount of time to plan impromptu remarks on an assigned topic. If someone asks you to speak on the spot, tell them you'd like a few minutes to think of what to say and to jot down some notes.
What questions are off-limits?
Any questions that reveal your age, race, national origin, gender, religion, marital status and sexual orientation are off-limits.