What is the question(s) that an applicant has asked in an interview that has majorly impressed HR or that had blown HR out of the water?

What are the things I need to learn before I join so that it'll be helpful for faster growth of company.

One of the best one is

Even before he/she (interviewer) tell you to leave, or we will get back to you.

You just make them into you, by asking this sarcastic question.

So, What are the things I need to learn before I join so that it'll be helpful for faster growth of company.

You just make believe the interviewer that, you are working for company. Not for yourself.

Hint : If interviewer ask {Any Questions} at the end, so that is the final opportunity for you to shake hands with the company.

Say Yes, go ahead.

I am sure, you will be selected if you ask anything at the end.